Home
Class 11
BIOLOGY
Assertion:Stems of some plants protect t...

Assertion:Stems of some plants protect them from browsing animals.
Reason:Axillary buds of stems of these plants are modified into thorns.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
A
Stems are modified to perform different functions like storage, protection, mechanical support and photosynthesis etc. Axillary buds of stems may also get modified into woody, straight and pointed thorns are found in many plants such as Citrus, Bougainvillea, etc. They protect plants from browsing animals and also reduce transpiration.
Promotional Banner

Similar Questions

Explore conceptually related problems

Stems found in water plants are called

A plant in which both stem and roots are modified is :

Plant cells differ from animal cells in having

Correct the statement: Stem of some xerophytes are modified to tendrils for defense.

Animal and plants are best protected in :

Assertion : In some plants flowering depends only on a combination of light and dark exposure. Reason : The site of perception of light or dark duration are the shoot apices of plants.

Assertion:In some leguminous plant, the leaf base is swollen. Reason:The swollen leaf base is called pulvinus.

Excessive nitrogen supply to the plants reduces the stem strength.

In virus-infected plants the meristematic tissues in both apical and axillary buds are free of virus because