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All questions of Plant Morphology for UPSC CSE Exam
The flavor of apples is mainly due to which one of the following?- a)Ethanol
- b)Benzene
- c)Formalin
- d)Benzaldehyde
Correct answer is option 'A'. Can you explain this answer?
The flavor of apples is mainly due to which one of the following?
a)
Ethanol
b)
Benzene
c)
Formalin
d)
Benzaldehyde
|
Om Basu answered |
Introduction to Apple Flavor
The flavor of apples is a complex combination of various compounds, with ethanol playing a significant role. Understanding this can enhance our appreciation for this popular fruit.
Role of Ethanol in Apple Flavor
- Ethanol is a type of alcohol produced during the fermentation process of sugars in fruits.
- It adds to the sweet and fruity notes that are characteristic of ripe apples.
- In apples, the concentration of ethanol can affect the perception of flavor, contributing to the overall sensory experience.
Other Compounds in Apple Flavor
While ethanol is crucial, other compounds also contribute to the flavor profile:
- Benzaldehyde: This compound gives a bitter almond-like flavor but is not the primary contributor in apples.
- Benzene: Known for its aromatic properties, it is not a flavor compound in apples and can be harmful.
- Formalin: This is a toxic substance used as a preservative and does not play any role in the flavor of apples.
Conclusion
In summary, while several compounds influence the flavor of apples, ethanol is the main contributor. It enhances the sweet and fruity taste that we associate with this beloved fruit, making option 'A' the correct answer. Understanding these nuances helps us appreciate the science behind the flavors we enjoy.
The flavor of apples is a complex combination of various compounds, with ethanol playing a significant role. Understanding this can enhance our appreciation for this popular fruit.
Role of Ethanol in Apple Flavor
- Ethanol is a type of alcohol produced during the fermentation process of sugars in fruits.
- It adds to the sweet and fruity notes that are characteristic of ripe apples.
- In apples, the concentration of ethanol can affect the perception of flavor, contributing to the overall sensory experience.
Other Compounds in Apple Flavor
While ethanol is crucial, other compounds also contribute to the flavor profile:
- Benzaldehyde: This compound gives a bitter almond-like flavor but is not the primary contributor in apples.
- Benzene: Known for its aromatic properties, it is not a flavor compound in apples and can be harmful.
- Formalin: This is a toxic substance used as a preservative and does not play any role in the flavor of apples.
Conclusion
In summary, while several compounds influence the flavor of apples, ethanol is the main contributor. It enhances the sweet and fruity taste that we associate with this beloved fruit, making option 'A' the correct answer. Understanding these nuances helps us appreciate the science behind the flavors we enjoy.
The bark of which tree is used as a compliment?- a)Clove
- b)Neem
- c)Cinnamon
- d)Palm
Correct answer is option 'C'. Can you explain this answer?
The bark of which tree is used as a compliment?
a)
Clove
b)
Neem
c)
Cinnamon
d)
Palm
|
Catalyst Learningacademy answered |
An aromatic spice made from the peeled, dried, and rolled bark of a SE Asian tree.
Which part of the plants are turnips?- a) Root vegetable
- b)Underground stem
- c)Stem
- d)None of these
Correct answer is option 'A'. Can you explain this answer?
Which part of the plants are turnips?
a)
Root vegetable
b)
Underground stem
c)
Stem
d)
None of these
|
|
Catalyst Learningacademy answered |
The turnip is a root vegetable commonly grown in temperate climates worldwide for its white, fleshy taproot.
Which of the following forms the basis of plant fibers? - a)Proteins
- b)Oils
- c)Cellulose
- d)Fats
Correct answer is option 'C'. Can you explain this answer?
Which of the following forms the basis of plant fibers?
a)
Proteins
b)
Oils
c)
Cellulose
d)
Fats
|
Paradigm Institute answered |
Cellulosic fibers are fibers made from cellulose ethers or esters which can be obtained from the bark, wood, plant leaves, or plant material.
By which mode do mushrooms get their nutrition?- a)Parasitic
- b)Saprophytic mode
- c)Chemosynthetic
- d)Photosynthetic
Correct answer is option 'B'. Can you explain this answer?
By which mode do mushrooms get their nutrition?
a)
Parasitic
b)
Saprophytic mode
c)
Chemosynthetic
d)
Photosynthetic
|
|
Catalyst Learningacademy answered |
Mushrooms have a saprophytic mode of nutrition. This is the reason organisms like mushrooms nourish from dead and decomposing plant or animal matter.
Which vegetables have taproots?- a)Brinjal
- b)Peanut
- c)Carrots
- d)Clove
Correct answer is option 'C'. Can you explain this answer?
Which vegetables have taproots?
a)
Brinjal
b)
Peanut
c)
Carrots
d)
Clove
|
|
Catalyst Learningacademy answered |
Taproot, the main root of a primary root system, growing vertically downward.
Which part of litchi fruit is eaten?- a)Pericarp
- b)Endocarp
- c)Fleshy Aril
- d)None of the above
Correct answer is option 'C'. Can you explain this answer?
Which part of litchi fruit is eaten?
a)
Pericarp
b)
Endocarp
c)
Fleshy Aril
d)
None of the above
|
|
Catalyst Learningacademy answered |
The edible litchi serving is aril. It is a fleshy part of the fruit, and it is available on the outer skin of the seeds.
What is the bond between two amino acids in a protein called?- a)Peptide bond
- b)Glycosidic bond
- c)Ester bond
- d)Phosphodiester bond
Correct answer is option 'A'. Can you explain this answer?
What is the bond between two amino acids in a protein called?
a)
Peptide bond
b)
Glycosidic bond
c)
Ester bond
d)
Phosphodiester bond
|
|
Catalyst Learningacademy answered |
The bond between two amino acids in a protein is called (a) Peptide bond. Peptide bonds are formed through a condensation reaction between the carboxyl group of one amino acid and the amino group of another amino acid. This bond plays a crucial role in linking amino acids together to form the linear chain of a protein.
Which plant has respiratory roots?- a)Mangrove
- b)Maize
- c)Chestnut
- d)Betel
Correct answer is option 'A'. Can you explain this answer?
Which plant has respiratory roots?
a)
Mangrove
b)
Maize
c)
Chestnut
d)
Betel
|
|
Catalyst Learningacademy answered |
The plant that has respiratory roots is (a) Mangrove. Mangroves are a group of trees and shrubs that grow in coastal areas, particularly in tropical and subtropical regions. They have specialized aerial roots called pneumatophores or respiratory roots. These roots emerge from the soil and protrude above the water surface, allowing the mangroves to obtain oxygen for respiration in waterlogged or anaerobic soil conditions. The respiratory roots of mangroves facilitate gas exchange, enabling the plants to survive in the unique and challenging coastal environments they inhabit.
A fertilized egg is known as a?- a)Spore
- b)Zoospore
- c)Zygote
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
A fertilized egg is known as a?
a)
Spore
b)
Zoospore
c)
Zygote
d)
None of these
|
|
Paradigm Institute answered |
When a fertilized egg has been implanted in the uterus, the group of cells that will become a baby is called an embryo.
What is the edible part of turmeric?- a)Root
- b)Fruit
- c)Corm
- d)Rhizome
Correct answer is option 'D'. Can you explain this answer?
What is the edible part of turmeric?
a)
Root
b)
Fruit
c)
Corm
d)
Rhizome
|
|
Paradigm Institute answered |
The edible part of turmeric is (d) Rhizome. The rhizome is an underground stem that grows horizontally and serves as the main part of the turmeric plant that is used for consumption. It is typically harvested, dried, and ground into a fine powder, which is widely used as a spice and coloring agent in cooking. The rhizome of turmeric contains the active compound curcumin, which is responsible for its distinct flavor and numerous health benefits.
In plants, which one of these tissues is called dead tissues?- a)Parenchyma
- b)Collenchyma
- c)Phloem
- d)Sclerenchyma
Correct answer is option 'D'. Can you explain this answer?
In plants, which one of these tissues is called dead tissues?
a)
Parenchyma
b)
Collenchyma
c)
Phloem
d)
Sclerenchyma
|
|
Catalyst Learningacademy answered |
In plants, the tissue that is referred to as dead tissue is (d) Sclerenchyma. Sclerenchyma cells are characterized by thick, rigid cell walls containing a high amount of lignin, which makes them strong and durable. Once fully mature, sclerenchyma cells undergo programmed cell death, resulting in a dead, hollow interior. These dead sclerenchyma cells provide structural support and protection to the plant, such as in the form of fibers or hard shells, but they no longer perform any metabolic functions.
Which part of a plant is clove?- a)Root
- b)Flower buds
- c)Leaves
- d)Stem
Correct answer is option 'B'. Can you explain this answer?
Which part of a plant is clove?
a)
Root
b)
Flower buds
c)
Leaves
d)
Stem
|
|
Paradigm Institute answered |
The aromatic flower buds of the plant are known as cloves and are commonly used as a spice.
The form which part of the opium plant do we get morphine?- a)Leaves
- b)Stem
- c)Bank
- d)Fruit coat
Correct answer is option 'D'. Can you explain this answer?
The form which part of the opium plant do we get morphine?
a)
Leaves
b)
Stem
c)
Bank
d)
Fruit coat
|
|
Paradigm Institute answered |
The morphine is extracted from the opium latex reducing the bulk weight by 88%.
Pollination by bats is called?- a)Chiropterophily
- b)Zoophile
- c)Anemophily
- d)Entomophily
Correct answer is option 'A'. Can you explain this answer?
Pollination by bats is called?
a)
Chiropterophily
b)
Zoophile
c)
Anemophily
d)
Entomophily
|
|
Catalyst Learningacademy answered |
Pollination by bats is called (a) Chiropterophily. Chiropterophily refers to the process of pollination where bats act as the primary pollinators. Bats are attracted to certain flowers, often with pale or white petals and strong fragrance, and they transfer pollen between flowers as they feed on nectar. This mutualistic relationship between bats and flowers is essential for the pollination and reproduction of specific plant species.
What is the Inflorescence of Wheat?- a)Raceme
- b)Catkin
- c)Panicle
- d)Spike
Correct answer is option 'D'. Can you explain this answer?
What is the Inflorescence of Wheat?
a)
Raceme
b)
Catkin
c)
Panicle
d)
Spike
|
|
Catalyst Learningacademy answered |
The inflorescence of wheat is (d) Spike. Wheat plants produce a spike inflorescence, which is a dense, elongated structure consisting of multiple florets attached directly to the main stem without any individual stalks. The spike of wheat contains both male and female reproductive structures, with the florets arranged tightly along the central stem. Each floret has stamens (male parts) and a pistil (female part) enclosed within protective bracts. This spike inflorescence is characteristic of wheat and plays a crucial role in the reproduction and formation of grains.
What is the eye of a potato called?- a)Seed
- b)Axillary bud
- c)Adventitious root
- d)Apical buds
Correct answer is option 'B'. Can you explain this answer?
What is the eye of a potato called?
a)
Seed
b)
Axillary bud
c)
Adventitious root
d)
Apical buds
|
|
Paradigm Institute answered |
The eye of a potato is called (b) Axillary bud. The eyes of a potato are small, dormant buds located on the surface of the potato tuber. These axillary buds have the potential to grow into new potato plants when conditions are favorable. Each eye contains meristematic tissue capable of developing into shoots, which can give rise to stems, leaves, and eventually new potato plants if provided with the appropriate growing conditions.
Which of the following is not a root?- a)Potato
- b)Carrot
- c)Sweat potato
- d)Radish
Correct answer is option 'A'. Can you explain this answer?
Which of the following is not a root?
a)
Potato
b)
Carrot
c)
Sweat potato
d)
Radish
|
|
Paradigm Institute answered |
It is a stem vegetable. the potatoes grow on the underground stem, called stolons.
Which is the protein fiber in the following given options?- a)Nylon
- b)Silk
- c)Cotton
- d)Polyester
Correct answer is option 'B'. Can you explain this answer?
Which is the protein fiber in the following given options?
a)
Nylon
b)
Silk
c)
Cotton
d)
Polyester
|
|
Paradigm Institute answered |
A natural fiber composed of protein. natural proteins fiber include wool, hair, fur, and silk.
What is plant bud?- a)An Embryonic leaf
- b)Embryonic shoot
- c)Embryonic stem
- d)A seed
Correct answer is option 'B'. Can you explain this answer?
What is plant bud?
a)
An Embryonic leaf
b)
Embryonic shoot
c)
Embryonic stem
d)
A seed
|
|
Paradigm Institute answered |
Buds are small outgrowths present terminally on the stem or in the axil of leaves.
Chapter doubts & questions for Plant Morphology - Lucent for GK 2025 is part of UPSC CSE exam preparation. The chapters have been prepared according to the UPSC CSE exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for UPSC CSE 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
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