Ncert solutions science class 7 Solutions for Chapter 1 nutrition in plants

Exercises in Chapter 1 nutrition in plants Grade 7

Exercise

Questions in Exercise

During photosynthesis plants take in ______________________ and release __________________

A plant that is partially autotrophic is called __________ .

The product of photosynthesis is not a protein. (T/F)

Plants which synthesise their food are called saprotrophs. (T/F)

Carbon dioxide is released during photosynthesis. (T/F)

The pores through which leaves exchange gases is called ________ .

Solar energy is converted into chemical energy during photosynthesis. (T/F)

Excess glucose produced by the plant is stored in the form of ___________.

(starch/water)

Green plants are called _________________ since they synthesise their own food.

In photosynthesis solar energy is absorbed by the pigment called ___________.

Why do organisms take food?

Q1) Why do organisms take food?

Q2) Distinguish between a parasite and a saprotroph.

Distinguish between a parasite and a saprophyte.

How would you test the presence of starch in leaves?

Q3) How would you test the presence of starch in leaves?

Q4) Give a brief description of the process of synthesis of food in green plants.

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

Q5) Show with the help of a sketch that plants are the ultimate source of food.

Fill in the blanks:

(a) Green plants are called _________________ since they synthesise their own food.

(b) The food synthesised by plants is stored as _________________.

(c) In photosynthesis solar energy is absorbed by the pigment called ___________.

(d) During photosynthesis plants take in ______________________ and release __________________ gas.

Q6)

Fill in the blanks:

(a) Green plants are called _________________ since they synthesise their own food.

(b) The food synthesised by plants is stored as _________________.

(d) During photosynthesis plants take in ______________________ and release __________________ gas.

Q7)Name the following:

(i) A parasitic plant with yellow, slender and branched stem.

(ii) A plant that is partially autotrophic.

(iii) The pores through which leaves exchange gases.

Name the following:

i) A parasitic plant with yellow, slender and branched stem.

ii) A plant that is partially autotrophic.

iii) The pores through which leaves exchange gases.

Tick the correct answer:

(a) Cuscuta is an example of:

(i) autotroph

(ii) parasite

(iii) saprotroph

(iv) host

(b) The plant which traps and feeds on insects is:

(i) Cuscuta

(ii) china rose

(iii) pitcher plant

(iv) rose

Cuscuta is an example of

Q8)Tick the correct answer:

(a) Cuscuta is an example of:

(i) autotroph (ii) parasite (iii) saprotroph (iv) host

(b) The plant which traps and feeds on insects is:

(i) Cuscuta (ii) china rose (iv) pitcher plant (iv) rose

The plant which traps and feeds on insects is

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

Q9)Match the items given in Column I with those in Column II:

Column I	Column II
Chlorophyll	Rhizobium
Nitrogen	Heterotrophs
cuscuta	pitcher plant
animals	leaf
insects	parasite

Q10) Mark "T" if the statement is true, and "F" if it is false. (i) Carbon dioxide is released during photosynthesis.

(ii) Plants which synthesise their food themselves are called saprotrophs.

(iii) The product of photosynthesis is not a protein.

(iv) Solar energy is converted into chemical energy during photosynthesis.

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

(i) Carbon dioxide is released during photosynthesis. (T/F)

(ii) Plants that synthesize their food 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)

Q11) Choose the correct option from the following:

Which part of the plant takes in carbon dioxide from the air for

photosynthesis?

(i) Root hair (ii) Stomata (iii) Leaf veins (iv) Petals

Choose the correct option from the following:

Which part of the plant takes in carbon dioxide from the air for photosynthesis?

(i) Root hair (ii) Stomata (iii) Leaf veins (iv) Petals

Choose the correct option from the following:

Plants take carbon dioxide from the atmosphere mainly through their:

(i) roots (ii) stem (iii) flowers (iv) leaves

Q12) Choose the correct option from the following:

Plants take carbon dioxide from the atmosphere mainly through their:

(i) roots (ii) stem (iii) flowers (iv) leaves

Why do farmers grow many fruits and vegetable crops inside large greenhouses? What are the advantages to the farmers?

Q13) Why do farmers grow many fruits and vegetable crops inside large green

houses? What are the advantages to the farmers?

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Chapters in this book

Nutrition in Plants

Nutrition in Animals

Fibre to Fabric

Heat

Acids, Bases and Salts

Physical and Chemical Changes

Weather, Climate and Adaptations of Animals to Climate

Winds, Storms and Cyclones

Soil

Respiration in Organisms

Transportation in Animals and Plants

Reproduction in Plants

Motion and Time

Electric Current and its Effects

Light

Water: A Precious Resource

Forests: Our Lifeline

Wastewater Story