Home
Class 11
BIOLOGY
Assertion: The trichomes in the shoot sy...

Assertion: The trichomes in the shoot system are usually multicelluler.
Reason: The trichomes help in preventing water loss due to evaporation.

A

If both assertion and reason are true and reason is the correct explanantion 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 both assertion and reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Assertion**: The assertion states that "The trichomes in the shoot system are usually multicellular." - Trichomes are indeed epidermal outgrowths found on the stems and leaves of plants. They can be composed of multiple cells, making them multicellular structures. 2. **Understanding the Reason**: The reason provided is "The trichomes help in preventing water loss due to evaporation." - Trichomes serve several functions, one of which is to reduce water loss by creating a barrier that minimizes evaporation. They can also provide protection against herbivores and can have secretory functions. 3. **Evaluating the Truth of Both Statements**: - Both the assertion and the reason are true. The assertion correctly identifies trichomes as multicellular, and the reason accurately describes one of their functions. 4. **Analyzing the Relationship Between Assertion and Reason**: - While both statements are true, the reason does not directly explain the assertion. The assertion is about the structure of trichomes, while the reason discusses their function. Therefore, the reason does not provide a rationale for why trichomes are multicellular. 5. **Conclusion**: - The correct answer is that both the assertion and reason are true, but the reason is not the correct explanation of the assertion. **Final Answer**: Both the assertion and reason are true, but the reason is not the correct explanation of the assertion. ---
**Step-by-Step Solution:** 1. **Understanding the Assertion**: The assertion states that "The trichomes in the shoot system are usually multicellular." - Trichomes are indeed epidermal outgrowths found on the stems and leaves of plants. They can be composed of multiple cells, making them multicellular structures. 2. **Understanding the Reason**: The reason provided is "The trichomes help in preventing water loss due to evaporation." - Trichomes serve several functions, one of which is to reduce water loss by creating a barrier that minimizes evaporation. They can also provide protection against herbivores and can have secretory functions. ...
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ANATOMY OF FLOWERING PLANTS

    NCERT FINGERTIPS ENGLISH|Exercise Anatomy Of Flowering Plants|143 Videos

  • ANATOMY OF FLOWERING PLANTS

    NCERT FINGERTIPS ENGLISH|Exercise Anatomy Of Flowering Plants|143 Videos

  • ANIMAL KINGDOM

    NCERT FINGERTIPS ENGLISH|Exercise Animal Kingdom|148 Videos

Similar Questions

Explore conceptually related problems

Trichomes of shoot system

Select true statements - (A) Phloem fibres are generally absent in the primary phloem. (B) Root hairs help in absorption of water and minerals from the soil (c ) Trichome help in preventing water loss due to transpiration.

Assertion : Reptiles can be termed as first true land animals Reason : These are completely independent of water due to the development of internal fertilization and the presence of a special membrane ( amnion) around the developing embryo.

Unrelated character regarding Trichomes in the shoot system is

In the following questions , a statement of assertion (A) is followed by a statement of reason (R). Br A: Epidermal hairs on the stem are called trichomes R: They help in absorption of water los due to transpiration,

How many of the following statements are correct? 1. Conjoint vascular bundles are not present in monocot stem. 2. Casparian strips of endodermis are made of cutin. 3. Pith is large and well developed in monocot roots. 4. Trichome helps in water loss due to transpiration.

Select correct features w.r.t. trichomes in shoot system (a) Usually unicelled (b) Branched or unbranched (c) May be secretory (d) Soft or stiff (e) Helps against transpiration

Assertion: The resin duct in coniferales is schizogenous in origin. Reason: Resin duct helps to retain water as well as seals the injured areas of plants.

Workers in deep mines usually suffer from dehydration because (a) Water is lost due to defecation (b) Water is lost due to evaporation (c) Water is lost along with salts in the form of sweat (d) Water is lost in the form of urine

Assertion : Sometimes insects can walk on water. Reason : The gravitational force on insect is balanced by force due surface tension.

Home
Profile