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Test: Plant Tissues - Class 9 MCQ


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20 Questions MCQ Test Science Class 9 - Test: Plant Tissues

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Test: Plant Tissues - Question 1

The term tissue was given by :-

Detailed Solution for Test: Plant Tissues - Question 1
The term tissue was given by marie francois xavier bichat in the year 1792. he was a french anatomist and pathologist and he was also know as 'father of histology '
Test: Plant Tissues - Question 2

Presence of tissues in a multicellular organism ensures :-

Detailed Solution for Test: Plant Tissues - Question 2
It is because that in eukaryotes the erticular tissue used to do one function...so they follow division of labour.
Test: Plant Tissues - Question 3

Tissue that is absent in monocots is:-

Detailed Solution for Test: Plant Tissues - Question 3

Collenchyma is a highly specialised supporting tissue. It is mainly present in stems, leaves,floral parts and is the main supporting tissue in many mature eudicot leaves and some green stems. Roots rarely have Collenchyma but Collenchyma may occur in cortex of root if root is exposed to light. Collenchyma is absent in monocots and roots due to early development of chlerenchyma. Schlerenchyma provide mechanical strength to plants so there will be no need for development of Collenchyma.

Test: Plant Tissues - Question 4

The grit of Pear is formed of:-

Detailed Solution for Test: Plant Tissues - Question 4

Pear flesh is infused with very fine grit, made of clusters of stone cells. Stone cells, a subtype of sclereid cells, make up some other very hard tissues like peach pits and nut shells. Stone cells are born with their own death as an end goal. They begin as all other plant cells do, with thin primary walls.

Test: Plant Tissues - Question 5

Which one is made of dead cells:-

Detailed Solution for Test: Plant Tissues - Question 5

All this are the supporting parts of plants which is not necessary to be live hence they are dead.

Test: Plant Tissues - Question 6

A pair of kidney-shpaed cells present around stomata are called :-

Detailed Solution for Test: Plant Tissues - Question 6
The pair of kidney-shaped cells present around stomata are called guard cells.
Explanation:
- The stomata are small openings present on the surface of leaves and stems that allow for gas exchange.
- The guard cells are specialized cells that surround each stoma and control its opening and closing.
- The shape of the guard cells is kidney-shaped, with a bulge on one side and a concave on the other side.
- The inner side of the guard cells facing the stomatal pore is thicker and more rigid, while the outer side is thinner and flexible.
- When the guard cells take up water, they become turgid and swell, causing the stomatal pore to open.
- Conversely, when the guard cells lose water, they become flaccid and shrink, leading to the closure of the stomatal pore.
- The opening and closing of stomata by the guard cells regulate the exchange of gases, including carbon dioxide and oxygen, as well as the loss of water through transpiration.
- Guard cells also play a role in controlling the entry of pathogens and regulating the plant's response to environmental factors such as light, temperature, and humidity.
Test: Plant Tissues - Question 7

Epiblema bears :-

Detailed Solution for Test: Plant Tissues - Question 7

The epiblema is the outermost epidermal layer of the root. The root hair cells are unbranched and lack cutinisation. They are responsible for absorbing water from the soil. The stem also possesses hairs but they are mostly multicellular. 

Test: Plant Tissues - Question 8

Tracheary elements of xylem are:-

Detailed Solution for Test: Plant Tissues - Question 8

The tracheary elements of the xylem are the tracheids and the xylem vessels. A tracheid is a tubular cell whose primary function is to conduct water and mineral salts, provide structural support, and prevent air embolism in vascular plants. A xylem vessel is a series of cells arranged in a way that enables rapid and more efficient water and mineral conduction in most angiosperms. 

Test: Plant Tissues - Question 9

Find out incorrect sentence :-

Detailed Solution for Test: Plant Tissues - Question 9

The incorrect sentence is “apical and intercalary meristems are permanent tissues”. The rest a, b and d are correct sentences.

Apical and intercalary tissues are meristematic tissues and not permanent tissues. Apical tissues are present on the tips of root and stem, they increase the length; intercalary tissues are present in the internodes, they increase the length between the nodes.

Test: Plant Tissues - Question 10

Which is not a function of epidermis ?

Detailed Solution for Test: Plant Tissues - Question 10

Conduction of water and minerals in plants takes place in conducting vessels, located in the core, called Xylem. Thus conduction of water is not the function of the epidermis but Xylem.

Test: Plant Tissues - Question 11

Increase in the length of the plant is caused by-

Detailed Solution for Test: Plant Tissues - Question 11

Apical meristem also known as growing tip , is an undifferentiated meristematic tissue found in the buds and growing tips of roots in plants . Its main function is to trigger the growth of new cells in young seedlings at the tip of roots and shoots and forming buds .

Test: Plant Tissues - Question 12

Cork cambium is an example of-

Detailed Solution for Test: Plant Tissues - Question 12

Cork cambium is a tissue found in many vascular plants as a part of the epidermis. It is one of the many layers of bark, between the cork and primary phloem. The cork cambium is a lateral meristem and is responsible for secondary growth that replaces the epidermis in roots and stems.

Test: Plant Tissues - Question 13

A simple permanent tissue devoid of intercellular spaces and lignin is-

Detailed Solution for Test: Plant Tissues - Question 13
Collenchyma, being a strong and flexible tissue, is a strengthening (mechanical) tissue of the growing organs. Collenchyma, is a simple tissue. Cells are living and thick-walled; thickenings are present at the corners of the cells and contain cellulose and pectin; lignin is never present. 

Test: Plant Tissues - Question 14

Interfascicular cambium is an example of-

Detailed Solution for Test: Plant Tissues - Question 14
Meristem that appears in the later stage of life of a plant is known as secondary meristem. They develop from non meristematic tissues or permanent tissues. Example: Interfascicular Cambium

Interfascicular Cambium:

1. This cambium is secondary meristem.

2. It develops from the parenchymatous cells of medullary rays.

3. It is located between two consecutive vascular bundles.

4. During secondary growth its derivatives are secondary phloem, secondary xylem and conjunctive tissue.
Test: Plant Tissues - Question 15

Bases of leaves and internodes have-

Detailed Solution for Test: Plant Tissues - Question 15

The intercalary meristem of the meristems present at the base of the internodes stem or leaf.
It helps in the elongation and growth of the plants at the nodes and internodes ( stems and leaves) and also enables the longitudinal growth of the stem and leaves (grasses).
 

Test: Plant Tissues - Question 16

Parenchymatous cells which are thickened with cellulose at the corner are called-

Detailed Solution for Test: Plant Tissues - Question 16

Parenchyma cells are plant cells that have thin cell walls and are usually involved in storage, photosynthesis, and support. Sclerenchyma cells are plant cells that have thick cell walls and are usually involved in support and protection.

Collenchyma cells are plant cells that have thickened cell walls at the corners and are usually involved in support. These cells are found in areas of the plant that are undergoing growth or where there is a need for extra support, such as at the tips of shoots and stems and in the outer layers of leaves.

Therefore, the correct answer is 1, "Collenchyma."

Test: Plant Tissues - Question 17

Nucleus is not present in-

Detailed Solution for Test: Plant Tissues - Question 17
Nucleus is not present in:
- Companion cell: Companion cells are specialized parenchyma cells that are closely associated with sieve tube elements in the phloem tissue. They play a crucial role in supporting the functions of sieve tube elements by providing them with metabolic support. Companion cells have a nucleus present in them.
- Mature sieve tube: Sieve tube elements are elongated cells that form the conducting tubes of the phloem tissue. They are responsible for the transport of sugars and other organic substances throughout the plant. However, mature sieve tube elements lack a nucleus. They lose their nucleus during their development to make more space available for the transport of nutrients.
- Phloem parenchyma: Phloem parenchyma cells are living cells that are involved in various metabolic functions within the phloem tissue. They provide support, storage, and repair functions. Similar to companion cells, phloem parenchyma cells possess a nucleus.
- Collenchyma: Collenchyma is a type of ground tissue that provides mechanical support to growing plant parts. It contains living cells with thickened cell walls. Collenchyma cells also have a nucleus present in them.
Therefore, the correct answer is b. Mature sieve tube, as they do not have a nucleus.
Test: Plant Tissues - Question 18

Sieve tubes and companion cells occur in-

Detailed Solution for Test: Plant Tissues - Question 18

PHLOEM :- The structural elements of phloem include sieve tubes, companion cells, Phloem parenchyma and secretory cells. The sieve tube is the conducting element of the phloem. It is formed from a vertical series of elongated cells, interconnected by perforations in their walls in areas known as sieve plates.

Test: Plant Tissues - Question 19

Elongated lignified cells with pointed ends belong to-

Detailed Solution for Test: Plant Tissues - Question 19

Sclerenchyma is a type of permanent tissue. They are dead, elongated, thin, narrow cells with thickened walls without any internal space. Therefore, option C is correct.

Test: Plant Tissues - Question 20

Tissues secreting latex are-

Detailed Solution for Test: Plant Tissues - Question 20

Laticiferous tissues are made up of thin walled, elongated, branched and multinucleate (coenocytic) structures that contain colourless, milky or yellow coloured juice called latex. These occur irregularly distributed in the mass of parenchymatous cells.

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