Question

I SEMESTER EXAMINATION 2020-21
Class - 8th
Subject - Science
Name :-
M.M.
Time : 2:15
Date :-
_
Section - A
Q.1. Write True or False.
1. Less supply of water to crops results in a condition called water logging. l.
2. The nutrients in the soil can be replenished by crop rotation.
3. The felling of mature crop in the field is called lodging.
4. Rhizobium lives in the root nodule of all plants.
5. Aedes aegypti spreads the protozoan plasmodium that causes malarial
2.2.
Fill in the blanks.
1. Stock maintained to compensate for the shortage due to failure of mons
known as
2. Organisms which damage the crop are known as
3. Micronutrients are
in number while macronutrients are
4. Curd contains bacterium
5. Diseases like dysentery and malaria are caused by
Match the column.
1. Unicellular algae
(a) Harvesting
2. Nitrates and nitrites
(b) Antibiotic chlorellin
3. Alexander fleming
(c) Chlamydomonas
in ni
Q.3.​

Answer 1

Answer:

1) 1. false

2. true

3. false

4.false-leguminious plant

5.false

2)1.

2. weeds

3.less,high

4.lactobasiles

5.bacteria( food poison)

3)1.(b)

2.(c)

3.(a)

pls mark me as brainlist

Answer 2

write the question properly