English

Give biological reasons for the following statements : In some xerophytes leaves are modified into spines - Biology

Advertisements
Advertisements

Question

Give biological reasons for the following statements : In some xerophytes leaves are modified into spines

Solution

Xerophytes are plants growing in dry climate. It is important for them to conserve water. Leaves modified into spines reduce the surface area and thus reduce the rate of transpiration.

shaalaa.com
  Is there an error in this question or solution?
2016-2017 (March) Set 1

RELATED QUESTIONS

 State the main functions of the following: 
Medulla Oblongata 


Answer the following:

Mention two significant advantages of photosynthesis to the living world as a whole.


Difference between an autotroph and a heterptroph. Give one example of each organism.

Why is the upper surface of broad leaves greener than their lower surface?

Fill in the blank:
Photosynthesis produces oxygen and ______.


Fill in the blanks:
The end products of photosynthesis are ______ and ______.


Choose the correct answer:
In a typical leaf, photosynthesis occurs mainly in ___________


Name the following:

The category of organisms that prepare their own food from basic raw materials.


Mention one difference between the following on the basis of what is given in bracket.

Grass and grasshopper (mode of nutrition)


Are the following statement true or false? Give a reason in support of your answer.

The rate of photosynthesis continues to rise as long as the intensity of light rises.


A candidate studied the importance of certain factors in photosynthesis. He took a potted plant and kept in the dark for over 24 hours. In the early hours of the next morning, he covered one of the leaves with black paper in the centre only. Then he placed the plant in sunlight for a few hours and tested the leaf which was covered with black paper for starch.

What aspect of photosynthesis was being investigated?


How do non-green plants such as fungi and bacteria obtain their nourishment?


Give technical term:

What is the percentage of CO2 in the air?


Write the functional activity of the following structure:
Granum


Choose the correct option.

A cell that lacks chloroplast does not ______.


Choose the correct option.

In presence of high concentration of oxygen, RuBP carboxylase converts RuBP to ______.


Fill in the blank by rearranging the letter in the bracket.

During photosynthesis plants releases _________ (egxyno).


Fill in the blanks:
\[\ce{6CO2}\] + ________ \[\ce{->[Sunlight][Chlorophyll]}\] _______ +\[\ce{ 6O2↑}\]

Mesophyll contains chlorophyll.


Define photosynthesis.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×