science - nutrition in plants

Class 7 - Science

Nutrition in Plants

Q&A
Question:

Name the following:
(i) A parasitic plant with yellow, slender and tubular stem.
(ii) A plant that has both autotrophic and heterotrophic mode of nutrition.
(iii) The pores through which leaves exchange gases.

Answer:

(i) cuscuta (ii) Insectivorous plant (iii) Stomata



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Questions and Answers


Nutrition in Plants - Questions
2.

Why do organisms need to take food?


Answer
3.

Show with the help of a sketch that the plants are the ultimate source of food.


Answer
4.

Fill in the blanks:
(a) Green plants are called ________________ since they synthesise their own food.
(b) The food synthesised by the plants is stored as ________________ .
(c) In photosynthesis solar energy is captured by the pigment called ________________
(d) During photosynthesis plants take in ________________ and release ________________ .


Answer
5.

How would you test the presence of starch in leaves?


Answer
6.

Give a brief description of the process of synthesis of food in green plants.


Answer
7.

Name the following:
(i) A parasitic plant with yellow, slender and tubular stem.
(ii) A plant that has both autotrophic and heterotrophic mode of nutrition.
(iii) The pores through which leaves exchange gases.


Answer
8.

Match the items given in Column I with those in Column II:


Answer
9.

Mark T' if the statement is true and ‘F' if it is false:

(i) Carbon dioxide is released during photosynthesis. (T/F)
(ii) Plants which synthesise their food themselves are called saprotrophs. (T/F)
(iii) The product of photosynthesis is not a protein. (T/F)
(iv) Solar energy is converted into chemical energy during photosynthesis. (T/F)


Answer
10.

Tick the correct answer:
(a) Amarbel is an example of:
(i) Autotroph (ii) Parasite (iii) Saprotroph (iv) Host

(b) The plant which traps and feeds on insects is:
(a) Cuscuta (ii) China rose {iii) Pitcher plant (iu) Rose


Answer
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