Selina solutions concise biology class 7 icse Solutions for Chapter 2 classification of plants

Q1) What name is given to bacteria found in the root nodules of pea plants ?

Q2) Briefly explain four types of bacteria on basis of their shape.

Q3) Give reasons for the following :

(i) Bryophytes are called amphibians of plant kingdom.

(ii) Amoeba does not have any regular shape.

Q4) What is a contractile vacoule ? State its function in amoeba.

Q5) List out five uses each of bacteria and fungi in our lives.

Q1) Tick the appropriate answer :

(a) The two main categories of plants recognised on the basis of whether they produce fruits or not:

1. Biennials and annuals

2. Angiosperms and gymnosperms

3. Herbs and shrubs

4. Bryophyta and pteridophyta

(b) Unicellular organisms with a proper nucleus are known as :

1. Protista

2. Monera

3. Fungi

4. Algae

(c) Amoeba belongs to:

1. Monera

2. Protista

3. Fungi

4. Algae

Q1) Name the categories of the following :

(a) Plants which do not have roots,stems,and leaves.

(b) Plants with no roots,but have stems and leaves.

(c) Plants with roots,stems,and leaves,and which bear spore-producing bodies.

(d) The amphibians of the plant kingdom mosses.

Q2) Give two characteristics and one example of each of the following :

(i) Algae

(ii) Fungi

(iii) Monocot

(iv) Dicot

(v) Bryophyta

(vi) Pteridophyta

(vii) Thallophytes

Q3) Differentiate between

(i) Algae and fungi

(ii) Monocot and dicot plants

(iii) Autotrophs and heterotrophs

(iv) Bacteria and amoeba

(v) Mosses and ferns

(vi) Angiosperms and gymnosperms

Q4) Match the items given under Column I with those given under Column II