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All questions of Morphology of Flowering Plants for ACT Exam
Can you explain the answer of this question below:A flower which can be divided into equal vertical halves by more than one plane of division is
- A:
Cyclic
- B:
Zygomorphic
- C:
Actinomorphic
- D:
Heteromorphic
The answer is c.
A flower which can be divided into equal vertical halves by more than one plane of division is
Cyclic
Zygomorphic
Actinomorphic
Heteromorphic
|
Om Desai answered |
Actinomorphic flowers are radially symmetrical, they are able to be divided into similar halves in more than one vertical plane.
Zygomorphic flowers are bilaterally symmetrical,they can be divided into similar halves in only one plane.
Cyclic is a type of floral organ arrangement, the floral organs are arranged in regular whorls at the node of the thalamus.
Heteromorphic is a type of incompatibilty, same species produce more than one morphological type of flower.
Zygomorphic flowers are bilaterally symmetrical,they can be divided into similar halves in only one plane.
Cyclic is a type of floral organ arrangement, the floral organs are arranged in regular whorls at the node of the thalamus.
Heteromorphic is a type of incompatibilty, same species produce more than one morphological type of flower.
Flowers in which only one set of essential organs is present are said to be- a)Polygamous
- b)Bisexual
- c)Dioecious
- d)Unisexual
Correct answer is option 'D'. Can you explain this answer?
Flowers in which only one set of essential organs is present are said to be
a)
Polygamous
b)
Bisexual
c)
Dioecious
d)
Unisexual
|
Krishna Iyer answered |
POLYGAMY ⇒ The condition of bearing some flowers with stamens only, some with pistils only, and some with both, on the same or different plants.
BISEXUAL ⇒ The flower having both male and female reproductive organ on the same plant.
DIOECIOUS ⇒ Both male and female plants may have flowers, but one will have "male" flowers and the other "female" flowers.
UNISEXTUAL ⇒ The flower which has only one essential worl either male or female.
Rhizome of ginger is a modification of stem because:
- a)It bears Adventitious roots
- b)It bears nodes and internodes
- c)It is underground
- d)It stores food material
Correct answer is option 'B'. Can you explain this answer?
Rhizome of ginger is a modification of stem because:
a)
It bears Adventitious roots
b)
It bears nodes and internodes
c)
It is underground
d)
It stores food material
|
Naina Bansal answered |
To differentiate between underground stems and modified roots,standard morphological character considered is presence an absence of nodes and internodes.
Androecium is the whorl of- a)Anthers
- b)Stamens
- c)Filaments
- d)Tepals
Correct answer is option 'B'. Can you explain this answer?
Androecium is the whorl of
a)
Anthers
b)
Stamens
c)
Filaments
d)
Tepals
|
Gaurav Kumar answered |
The androecium is the third whorl of a flower whose individual unit is called the stamen. It is the male reproductive organ whorl.
(A) Anthers are the parts of the stamen in which pollen grains are formed.
(B) Stamens are the male reproductive structures, collectively called the androecium.
(C) Filaments are the parts of stamens that connect the anthers to the thalamus.
(D) Tepals are the units of the whorl called the perianth.
(B) Stamens are the male reproductive structures, collectively called the androecium.
(C) Filaments are the parts of stamens that connect the anthers to the thalamus.
(D) Tepals are the units of the whorl called the perianth.
Hence the correct answer is 'Stamens'
Stem developes from______.
- a)Plumule
- b)Radicle
- c)Both 1 & 2
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
Stem developes from______.
a)
Plumule
b)
Radicle
c)
Both 1 & 2
d)
None of the above
|
|
Gaurav Kumar answered |
The stem is the ascending part of the axis bearing branches, leaves, flowers and fruits. It develops from the plumule of the embryo of a germinating seed. It bears nodes and internodes.
Main function of leaf is- a)Manufacture of food
- b)Exchange of gases
- c)Both 1 and 2
- d)None of the above
Correct answer is option 'C'. Can you explain this answer?
Main function of leaf is
a)
Manufacture of food
b)
Exchange of gases
c)
Both 1 and 2
d)
None of the above
|
Vaishnavi Agrawal answered |
C option is correct because as we know that plant make their own food in the presence of light as well as exchange of gases also takes place.
A typical flower with superior ovary and other floral parts inferior is- a)Polygamous
- b)Hypogynous
- c)Perigynous
- d)Epigynous
Correct answer is option 'B'. Can you explain this answer?
A typical flower with superior ovary and other floral parts inferior is
a)
Polygamous
b)
Hypogynous
c)
Perigynous
d)
Epigynous
|
|
Hitakshi Tamta G answered |
A typical flower which has ovary placed superior with respect to the other floral organs is called hypogynous. The other floral organs are attached below the ovary to the receptacle.
Epigynous flowers have an inferior ovary.
Perigynous flowers have a half-inferior and half-superior ovary.
Hence, the correct answer is 'Hypogynous'.
Epigynous flowers have an inferior ovary.
Perigynous flowers have a half-inferior and half-superior ovary.
Hence, the correct answer is 'Hypogynous'.
If the filaments are fused in a single group the condition is- a)Monoadelphous
- b)Polyadelphous
- c)Both 1 & 2
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
If the filaments are fused in a single group the condition is
a)
Monoadelphous
b)
Polyadelphous
c)
Both 1 & 2
d)
None of the above
|
|
Gaurav Kumar answered |
► The condition of stamens in which the stamens are united in a single bundle or group is called monadelphous. It is seen in Hibiscus.
► Polyadelphous is the condition in which stamens are united to form more than two bundles. It is seen in Ricinus.
Floral diagram fails to indicate –- a)Epiphylly and epipetaly
- b)Position of ovary on the thalamus
- c)Aestivation and placentation
- d)Cohesion of stamens and carpels
Correct answer is option 'B'. Can you explain this answer?
Floral diagram fails to indicate –
a)
Epiphylly and epipetaly
b)
Position of ovary on the thalamus
c)
Aestivation and placentation
d)
Cohesion of stamens and carpels
|
Lavanya Menon answered |
The floral diagram is basically the graphic representation of a flower structure. It gives information about the number of whorls, sizes, and fusions and also contains extra information like cohesion of carpels and stamens, symmetry, aestivation, placentation etc.
So the correct option is 'Position of ovary on thalamus'
So the correct option is 'Position of ovary on thalamus'
The edible part of turnip is:
- a)Modified Adventitious roots
- b)Modified tap root
- c)Stem
- d)Underground stem
Correct answer is option 'B'. Can you explain this answer?
The edible part of turnip is:
a)
Modified Adventitious roots
b)
Modified tap root
c)
Stem
d)
Underground stem
|
Rohan Singh answered |
Food storing tap root :Turnip,carrot
Food storing adventitious root :Sweet potato
Food storing underground stem :Potato,ginger etc.
Pulses which we use for daily purpose belong to the family- a)Malvaceae
- b)Liliaceae
- c)Solanaceae
- d)Fabaceae
Correct answer is option 'D'. Can you explain this answer?
Pulses which we use for daily purpose belong to the family
a)
Malvaceae
b)
Liliaceae
c)
Solanaceae
d)
Fabaceae
|
Lekshmi Banerjee answered |
Fabaceae are the sources of pulses such as gram, arhar,sem, moong, soyabean.
If the filaments are fused in a single group the condition is - - a)Monoadelphous
- b)Polyadelphous
- c)Both 1 & 2
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
If the filaments are fused in a single group the condition is -
a)
Monoadelphous
b)
Polyadelphous
c)
Both 1 & 2
d)
None of the above
|
Athul Yadav answered |
In this stamens within a flower are fused together at least partly by the filaments.
A scar on the seed coat through which the developing seed is attached to the fruit is- a)Hypocotyl
- b)Coleorhiza
- c)Epicotyl
- d)Hilum
Correct answer is option 'D'. Can you explain this answer?
A scar on the seed coat through which the developing seed is attached to the fruit is
a)
Hypocotyl
b)
Coleorhiza
c)
Epicotyl
d)
Hilum
|
Anjali Iyer answered |
The outer layer is called testa and the inner layer is called tegmen. There is a scar on the seed coat through which the developing seed was attached to the fruit. This scar is called hilum.
Presence of monocarpellary, unilocular ovary with marginal placentation are characteristic of–- a)Solanaceae
- b)Cruciferae
- c)Leguminosae
- d)Compositae
Correct answer is option 'C'. Can you explain this answer?
Presence of monocarpellary, unilocular ovary with marginal placentation are characteristic of–
a)
Solanaceae
b)
Cruciferae
c)
Leguminosae
d)
Compositae
|
Preeti Iyer answered |
Leguminosae is a large and economically important family of flowering plants. In leguminosae the ovary is monocarpellary, superior, unilocular with marginal placentation.
Marginal placentation is found in monocarpellary unilocular ovary, placenta forms a rigid along ventral side and ovules are arranged in two vertical rows. In leguminosae, the stamens are 10, diadelphous [stamens are united by their filaments so as to form two groups i.e (9+1)]
Marginal placentation is found in monocarpellary unilocular ovary, placenta forms a rigid along ventral side and ovules are arranged in two vertical rows. In leguminosae, the stamens are 10, diadelphous [stamens are united by their filaments so as to form two groups i.e (9+1)]
So, the correct answer is "Leguminosae"
The tissue which attaches the ovules inside the ovary is- a)Funicle
- b)Hilum
- c)Placenta
- d)Chalaza
Correct answer is option 'C'. Can you explain this answer?
The tissue which attaches the ovules inside the ovary is
a)
Funicle
b)
Hilum
c)
Placenta
d)
Chalaza
|
|
Rohit Jain answered |
The part of the ovary where the funiculus attaches is referred to as the placenta.
In flowering plants, placentation occurs where the ovules are attached inside the ovary.
The placenta is attached to the developing seed near the______.
- a)Testa
- b)Chalaza
- c)Micropyle
- d)Hilum
Correct answer is option 'D'. Can you explain this answer?
The placenta is attached to the developing seed near the______.
a)
Testa
b)
Chalaza
c)
Micropyle
d)
Hilum
|
|
Sadiya Siddique answered |
The placenta is attached to the developing seed near hilum. It is the scar located near the edge where seed breaks from stalf of funicules i.e., connecting the seed with fruit wall and placenta.
Main function of leaf is - - a)Manufacture of food
- b)Exchange of gases
- c)Both (1) and (2)
- d)None of the above
Correct answer is option 'C'. Can you explain this answer?
Main function of leaf is -
a)
Manufacture of food
b)
Exchange of gases
c)
Both (1) and (2)
d)
None of the above
|
|
Neha Joshi answered |
Leaves are appendages present in green plants.
They contain a pigment called chlorophyll which is necessary for photosynthesis. This photosynthetic reaction takes place in the leaves and results in the production of carbohydrates (food).
The lower surface of leaves has many small openings known as stomata. These pores help the plant in the exchange of gasses with their surroundings.
Therefore it can be inferred that both the manufacture of food and exchange of gasses takes place through leaves.
They contain a pigment called chlorophyll which is necessary for photosynthesis. This photosynthetic reaction takes place in the leaves and results in the production of carbohydrates (food).
The lower surface of leaves has many small openings known as stomata. These pores help the plant in the exchange of gasses with their surroundings.
Therefore it can be inferred that both the manufacture of food and exchange of gasses takes place through leaves.
Which of the following is NOT a characteristic of the Solanaceae family?- a)Taproot system
- b)Climbing stems
- c)Pinnately compound leaves
- d)Epipetalous anthers
Correct answer is option 'D'. Can you explain this answer?
Which of the following is NOT a characteristic of the Solanaceae family?
a)
Taproot system
b)
Climbing stems
c)
Pinnately compound leaves
d)
Epipetalous anthers
|
Manohar Babu answered |
Ncert page 80 epipetalous for solanaceae (to be frank, epiphyllous is regarding to parianth but not to corolla)
Testa of seed develops from- a)Hilum
- b)Ovary wall
- c)Outer integument
- d)Funicle
Correct answer is option 'C'. Can you explain this answer?
Testa of seed develops from
a)
Hilum
b)
Ovary wall
c)
Outer integument
d)
Funicle
|
Dev Patel answered |
The outer seed coat (testa) of a seed is produced from outer integument of ovule. The inner integument forms tegmen (inner seed coat). Ovary wall forms pericarp (fruit wall).
Water is absorbed by______.
- a)Root hairs
- b)Root cap
- c)Root
- d)Root apex
Correct answer is option 'A'. Can you explain this answer?
Water is absorbed by______.
a)
Root hairs
b)
Root cap
c)
Root
d)
Root apex
|
|
Raghav Bansal answered |
Root hairs in plants have large surface area and is surrounded by water soil and nutrients and due to large surface area root hairs absorb water for the growth of plants.
Cruciform corolla is found in - - a)Pea
- b)China rose
- c)Radish
- d)Sunflower
Correct answer is option 'C'. Can you explain this answer?
Cruciform corolla is found in -
a)
Pea
b)
China rose
c)
Radish
d)
Sunflower
|
Hansa Sharma answered |
Cruciform corolla is a type of polypetalous corolla in which the four free petals are equal and arranged in the form of a cross. It is a regular corolla and is characteristics of the family Brassicaceae. Hence cruciform corolla is found in radish.
A flower which can be divided into equal vertical halves by more than one plane of division is- a)Cyclic
- b)Zygomorphic
- c)Actinomorphic
- d)Heteromorphic
Correct answer is option 'C'. Can you explain this answer?
A flower which can be divided into equal vertical halves by more than one plane of division is
a)
Cyclic
b)
Zygomorphic
c)
Actinomorphic
d)
Heteromorphic
|
|
Rajeev Saxena answered |
A actinomorphic flower is a type of flower that possesses radial symmetry. Any type of cut through the center will divide the flower into two equal parts.
Also known as "star-shaped", “regular”, “radial” or a “polysymmetric” flower, actinomorphic flowers can be bisected at any point and have two identical halves. Most flowers are actinomorphic. On a higher level, this is known as floral symmetry.
The floral organs arise from- a)Mother axis
- b)Thalamus
- c)Root
- d)Pedicel
Correct answer is option 'B'. Can you explain this answer?
The floral organs arise from
a)
Mother axis
b)
Thalamus
c)
Root
d)
Pedicel
|
|
Rohan Singh answered |
Thalamus (also called torus) is the axis of the floral shoot which is the direct prolongation of the pedicel and bears four sets of floral members.
Bicarpellary, syncarpous ovary with axile placentation is seen in the plants of family_______.
- a)Malvaceae
- b)Asteraceae
- c)Solanaceae
- d)Caesalpiniaceae
Correct answer is option 'C'. Can you explain this answer?
Bicarpellary, syncarpous ovary with axile placentation is seen in the plants of family_______.
a)
Malvaceae
b)
Asteraceae
c)
Solanaceae
d)
Caesalpiniaceae
|
|
Anjali Iyer answered |
Solanaceae or nightshades are an economically important family of flowering plants. The family ranges from annual and perennial herbs to vines, epiphytes, shrubs and trees.
In Solanaceae, the gynoecium is Bicarpellary, syncarpous, ovary superior, bilocular, axile placentation, placenta swollen, many ovules in each locule, ovary obliquely placed, style simple; stigma bifid or capitate.
So, the correct answer is 'Solanaceae'.
Plants disperse their seeds and fruits because –- a)To produce them
- b)They are good and edible
- c)They want to eliminate struggle for existence
- d)None of the above
Correct answer is option 'D'. Can you explain this answer?
Plants disperse their seeds and fruits because –
a)
To produce them
b)
They are good and edible
c)
They want to eliminate struggle for existence
d)
None of the above
|
|
Gaurav Kumar answered |
Dispersal of seeds is very important for the survival of plant species. If plants grow too closely together, they have to compete for light, water and nutrients from the soil. Seed dispersal allows plants to spread out from a wide area and avoid competing with one another for the same resources.
Broad part of leaf is:
- a)Leaf base
- b)Petiole
- c)Lamina
- d)All
Correct answer is option 'C'. Can you explain this answer?
Broad part of leaf is:
a)
Leaf base
b)
Petiole
c)
Lamina
d)
All
|
|
Rajat Kapoor answered |
Most leaves have two main parts:
(1) the blade and (2) the petiole, or leafstalk. The leaves of some kinds of plants also have a third part, called the stipules. The Blade, or lamina, is the broad, flat part of the leaf. Photosynthesis occurs in the blade, which has many green food-making cells.
(1) the blade and (2) the petiole, or leafstalk. The leaves of some kinds of plants also have a third part, called the stipules. The Blade, or lamina, is the broad, flat part of the leaf. Photosynthesis occurs in the blade, which has many green food-making cells.
The small lateral outgrowth of the leaf base which protect the young leaf and its axillary buds in young stage is called- a)Pulvinus
- b)Bracts
- c)Stipules
- d)Petiolate
Correct answer is option 'C'. Can you explain this answer?
The small lateral outgrowth of the leaf base which protect the young leaf and its axillary buds in young stage is called
a)
Pulvinus
b)
Bracts
c)
Stipules
d)
Petiolate
|
Shruti Chauhan answered |
The leaf base bear two lateral small leaf like structures called stipules.
Placentation in a syncarpous, unilocular ovary bearing two or more placentae longitudinally along the wall is called- a)Apical
- b)Parietal
- c)Axile
- d)Marginal
Correct answer is option 'B'. Can you explain this answer?
Placentation in a syncarpous, unilocular ovary bearing two or more placentae longitudinally along the wall is called
a)
Apical
b)
Parietal
c)
Axile
d)
Marginal
|
Gowri Nair answered |
Placentation in a syncarpous, unilocular ovary bearing two or more placentae longitudinallyalong the wall is called parietal placentation.
Which plant shows valvate aestivation?- a)China rose
- b)Pea
- c)Gulmohur
- d)Calotropis
Correct answer is option 'D'. Can you explain this answer?
Which plant shows valvate aestivation?
a)
China rose
b)
Pea
c)
Gulmohur
d)
Calotropis
|
Ruchi Chopra answered |
When sepals or petals in a whorl just touch one another at the margin, without overlapping, as in Calotropis, it is said to be valvate.
Radish is an example of - - a)Fusiform root
- b)Napiform root
- c)Conical root
- d)Tuberous root
Correct answer is option 'A'. Can you explain this answer?
Radish is an example of -
a)
Fusiform root
b)
Napiform root
c)
Conical root
d)
Tuberous root
|
Anjana Dasgupta answered |
Fusiform root
Characters: Swollen at middle and tapering at both the ends (spindle shaped).It gradually tapers towards the apex,Half of the fleshy part is derived from the hypocotyl.
Examples: Radish (Raphanus sativus) (मूली) Most of the fleshy part is derived from the hypocotyl
Pappus is modification of - - a)Bracts
- b)Corolla
- c)Calyx
- d)All
Correct answer is option 'C'. Can you explain this answer?
Pappus is modification of -
a)
Bracts
b)
Corolla
c)
Calyx
d)
All
|
|
Hitakshi Tamta G answered |
The pappus is the modified calyx, the part of an individual floret, that surrounds the base of the corolla tube in flower heads. It is hairy or feathery structure that persists in fruits to allow the dispersal of seeds. It is a characteristic feature of the family Asteraceae. So, the correct answer is 'Calyx'.
Inflorescence which shows indefinite growth and bears a number of flowers due to active growing point is called- a)Racemose
- b)Spike
- c)Corymb
- d)Cymose
Correct answer is option 'A'. Can you explain this answer?
Inflorescence which shows indefinite growth and bears a number of flowers due to active growing point is called
a)
Racemose
b)
Spike
c)
Corymb
d)
Cymose
|
Bhargavi Choudhury answered |
In recemose inflorescence indefinite growth occurs and bears a number of flowers due to active growing point.
The arrangement of leaves on a stem is called:
- a)Venation
- b)Inflorescence
- c)Phyllotaxy
- d)Aestivation
Correct answer is option 'C'. Can you explain this answer?
The arrangement of leaves on a stem is called:
a)
Venation
b)
Inflorescence
c)
Phyllotaxy
d)
Aestivation
|
Shalini Saha answered |
The arrangement of leaves on a stem is called phyllotaxy. There are three types of phyllotaxy
If the margin of thalamus grows upward enclosing the ovary completely and getting fused with it, the other parts of flower arise above the ovary, the flower is said to be- a)Perigynous
- b)Hypogynous
- c)Epigynous
- d)Hypergynous
Correct answer is option 'C'. Can you explain this answer?
If the margin of thalamus grows upward enclosing the ovary completely and getting fused with it, the other parts of flower arise above the ovary, the flower is said to be
a)
Perigynous
b)
Hypogynous
c)
Epigynous
d)
Hypergynous
|
Anirudh Datta answered |
In epigynous flowers, the margin of thalamus grows upward enclosing the ovary completely and getting fused with it, the other parts of flower arise above the ovary.
Stamens attached to petals are- a)Epipetalous
- b)Epiphyllous
- c)Episepalous
- d)All
Correct answer is option 'A'. Can you explain this answer?
Stamens attached to petals are
a)
Epipetalous
b)
Epiphyllous
c)
Episepalous
d)
All
|
Sadiya Siddique answered |
Epipetalous means petals attached to stamens, epiphyllous condition is the one in which the stamens are fused with tepals(whorls of perianth) and episepalous is in which sepals are fused with stamens.thus, op A.
The side of a flower facing the mother axis is called - - a)Anterior side
- b)Posterior side
- c)Dorsal side
- d)Ventral side
Correct answer is option 'B'. Can you explain this answer?
The side of a flower facing the mother axis is called -
a)
Anterior side
b)
Posterior side
c)
Dorsal side
d)
Ventral side
|
|
Pooja Shah answered |
The branch bearing flower is called as the mother axis. The side of the flower facing it is called as posterior side. Therefore, option B is correct.
Rolling mechanism of dispersal is found in –- a)Amaranthus
- b)Acer
- c)Shorea
- d)Moringa
Correct answer is option 'A'. Can you explain this answer?
Rolling mechanism of dispersal is found in –
a)
Amaranthus
b)
Acer
c)
Shorea
d)
Moringa
|
Akshara Chopra answered |
When released from their seed capsules they flutter or spin through the air. Whether they spin or merely flutter depends on the size, shape, and pitch of the wings, and the wind velocity. This method sometimes called a rolling mechanism.
Which one of the following is of related type - - a)Catkin and Hypanthodium
- b)Raceme and Cyathium
- c)Corymb and Umbel
- d)Verticillaster and spike
Correct answer is option 'C'. Can you explain this answer?
Which one of the following is of related type -
a)
Catkin and Hypanthodium
b)
Raceme and Cyathium
c)
Corymb and Umbel
d)
Verticillaster and spike
|
Isha Chopra answered |
In the first option, catkin is a type of inflorescence but hypanthodium is depicting a part of a flower.
In the second option, raceme and cyathium both are types of inflorescence but are different.
In the fourth option, verticillaster is a mixed type of inflorescence and spike is a separate type than it.
But correctly related are corymb and umbel, in these, both are closely related type of inflorescence like both are a type of racemose inflorescence.
In which type of placentation, the ovary is unilocularwith a single ovule?- a)Axile placentation
- b)Marginal placentation
- c)Free central placentation
- d)Basal placentation
Correct answer is option 'D'. Can you explain this answer?
In which type of placentation, the ovary is unilocularwith a single ovule?
a)
Axile placentation
b)
Marginal placentation
c)
Free central placentation
d)
Basal placentation
|
Rhea Sarkar answered |
In basalplacentation, the placenta develops at the base of ovary and a single ovule is attached to it,
The floral organs arise from - - a)Flower
- b)Mother axis
- c)Root
- d)Pedicel
Correct answer is option 'B'. Can you explain this answer?
The floral organs arise from -
a)
Flower
b)
Mother axis
c)
Root
d)
Pedicel
|
|
Gaurav Kumar answered |
- In the context of flowering plants, the term "mother axis" refers to the main axis or stem from which flowers arise.
- The floral organs, which include sepals, petals, stamens, and pistils, are specialized structures that make up the flower.
- These floral organs arise from specific regions or nodes along the mother axis, which is also known as the floral axis.
The root is covered at the apex by a thimble-like structure called- a)Region of maturation
- b)Root cap
- c)Region of meristematic activity
- d)Root hair
Correct answer is option 'B'. Can you explain this answer?
The root is covered at the apex by a thimble-like structure called
a)
Region of maturation
b)
Root cap
c)
Region of meristematic activity
d)
Root hair
|
Arya Khanna answered |
The root is covered at the apex by a thimble-like structure called the root cap.
Which of the following plants produces edible root - - a)Raphanus sativus
- b)Brassica compestris
- c)Brassica oleracea
- d)Eruca sativa
Correct answer is option 'A'. Can you explain this answer?
Which of the following plants produces edible root -
a)
Raphanus sativus
b)
Brassica compestris
c)
Brassica oleracea
d)
Eruca sativa
|
Tejas Joshi answered |
Raphanus sativus (radish) is an annual or biennial plant in the mustard family. It is grown for its large succulent taproot which is edible.
Clove is –- a)Bud
- b)Fruit
- c)Seed
- d)Mature flower
Correct answer is option 'A'. Can you explain this answer?
Clove is –
a)
Bud
b)
Fruit
c)
Seed
d)
Mature flower
|
Athul Chakraborty answered |
Answer :
a)
Bud Cloves are the dried, unopened, nail-
shaped flower buds of the evergreen tree Syzygium aromaticum.
Monadelphous stamens are formed by the fusion of –- a)Anther lobes of all stamens
- b)Anther lobes of two stamens
- c)Filaments of all stamens
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
Monadelphous stamens are formed by the fusion of –
a)
Anther lobes of all stamens
b)
Anther lobes of two stamens
c)
Filaments of all stamens
d)
None of these
|
|
Hansa Sharma answered |
When the stamens get binded in a bunch or a single bundle, it is called Monoadelphous.
The stamens are binded through the filaments of the anthers.
Stamen is composed of several anthers. And filament is a thread like structure which works as a connecting medium for stamen and thalamus.
The stamens are binded through the filaments of the anthers.
Stamen is composed of several anthers. And filament is a thread like structure which works as a connecting medium for stamen and thalamus.
Which family is known for its plants with taproot system and includes herbs, shrubs, small trees, and climbers?- a)Solanaceae
- b)Fabaceae
- c)Liliaceae
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
Which family is known for its plants with taproot system and includes herbs, shrubs, small trees, and climbers?
a)
Solanaceae
b)
Fabaceae
c)
Liliaceae
d)
None of the above
|
|
Dev Patel answered |
The Solanaceae family is known for its plants with a taproot system, which includes various types of plants such as herbs, shrubs, small trees, and climbers.
So the correct answer is A
So the correct answer is A
A pernnial plant which flower once in its life time is known as- a)Annual
- b)Perennial
- c)Monocarpic
- d)Polycarpic
Correct answer is option 'C'. Can you explain this answer?
A pernnial plant which flower once in its life time is known as
a)
Annual
b)
Perennial
c)
Monocarpic
d)
Polycarpic
|
Aravind Kapoor answered |
Some perennials flower only once in their lifetime, set seeds and die. The next generation of the plants are established from these seeds and the cycle is repeated. Such plants are known as monocarpic, opposed to polycarpic plants that flower and set seeds many times during its lifetime.
Phyllode is the modification of –- a)Stipule
- b)Petiole
- c)Root
- d)Stem
Correct answer is option 'B'. Can you explain this answer?
Phyllode is the modification of –
a)
Stipule
b)
Petiole
c)
Root
d)
Stem
|
|
Niharika Saha answered |
Leaf morphology in certain plants, where the leaf blade is expanded and flattened to resemble a petiole or stem. This modification allows the plant to conserve water and reduce surface area exposed to sunlight. Phyllodes are commonly found in plants of the Acacia genus, such as Acacia melanoxylon, and are often mistaken for true leaves. They function similarly to leaves, performing photosynthesis and aiding in transpiration, but their modified shape provides additional benefits in arid or semi-arid environments.
Axis between corolla and androecium is - - a)Anthophore
- b)Gynophore
- c)Gynandrophore
- d)Androphore
Correct answer is option 'D'. Can you explain this answer?
Axis between corolla and androecium is -
a)
Anthophore
b)
Gynophore
c)
Gynandrophore
d)
Androphore
|
|
Neha Joshi answered |
The axis or the internode that elongates between the corolla and androecium is called androphore. It is also called as gynandrophore. Anthophore is present between calyx and corolla. Gynophore is present between androecium and gynoecium.
Chapter doubts & questions for Morphology of Flowering Plants - Science for ACT 2025 is part of ACT exam preparation. The chapters have been prepared according to the ACT exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for ACT 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
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