Anatomy of Flowering Plants · Question 1

The main function of bulliform cells in grasses is :

1. to perform photosynthesis.
2. to minimize water loss during water stress.
3. to make the leaf impermeable to fungal spores.
4. to transport water.

Find the statement that is NOT correct with regard to the structure of monocot stem.

1. Vascular bundles are conjoint and closed.
2. Phloem parenchyma is absent.
3. Hypodermis is parenchymatous.
4. Vascular bundles are scattered.

In the given figure, which component has thin outer walls and highly thickened inner walls? [Figure]

1. C
2. D
3. A
4. B

Given below are two statements: In the light of the above statements, choose the correct answer from the options given below:

1. Both Statement I and Statement II are true
2. Both Statement I and Statement II are false
3. Statement I is true but Statement II is false
4. Statement I is false but Statement II is true

Bulliform cells are responsible for

1. Inward curling of leaves in monocots.
2. Protecting the plant from salt stress.
3. Increased photosynthesis in monocots.
4. Providing large spaces for storage of sugars.

Which of the following simple tissues are commonly found in the fruit walls of nuts and pulp of pear?

1. Sclereids
2. Fibres
3. Parenchyma
4. Collenchyma

Which one of the following is not found in Gymnosperms?

1. Sieve cells
2. Albuminous cells
3. Tracheids
4. Vessels

Which of the following helps in maintenance of the pressure gradient in sieve tubes?

1. Albuminous cells
2. Sieve cells
3. Phloem parenchyma
4. Companion cells

Given below are two statements: In the light of the above statements, choose the correct answer from the options given below:

1. Statement I is true but Statement II is false
2. Statement I is false but Statement II is true
3. Both Statement I and Statement II are true
4. Both Statement I and Statement II are false

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R) : In the light of the above statements, choose the correct answer from the options given below :

1. Both A and R are true but R is NOT the correct explanation of A
2. A is true but R is false
3. A is false but R is true
4. Both A and R are true and R is the correct explanation of A