11. List two physical properties of soil. list three conditions necessary for the germination of seed.

E. P BETHEL INTERNATIONAL SCHOOL- ACCRA NEWTOWN
END OF SECOND TERM EXAMINATION- 2020
INTEGRATED SCIENCE-JHS ONE
SECTION B (ESSAY) 6OMARKS
Answer any four questions in this section. Each complete question carries 15 marks.
2. a. i. State the reasons why some seeds are nursed.
(3mar
(2mar
(1x3.
(2mc
(2m
b. I. List three (3) conditions necessary for the germination of seed.
ii. State two functions of roots.
'c. (1) What is dispersal of seeds?
(11) State two characteristics of seeds dispersed by wind.
3. a. Apiece of stone has a mass of 360g. When it is put into water in a glass,
the level of water rises from 60.0cm to 90.0cm. Calculate the density of
(3r
(5
the stone.
b. i. List three benefits of vegetables to humans.
ii. Give two reasons why soil air is important.
c. 1. Define the term soil profile.
ii. State two ways in which soil profile is important in crop production

Number 11 is the soil color and the soil texture.

Number 2.a.i. is to protect the seeds from harsh weather conditions e.g. sunlight rainfall etc.

b. water, oxygen and warmth

c.1) Seed dispersal is the scattering of seeds from a mother plant to new areas.

11) Seeds dispersed by wind have wing like structures.

Seeds dispersed by wind are light.

3a. Density=Mass/Volume

=360g/60cm³ then cancel zero and zero then cancel by 6 once by 36÷6 we get 6g/cm³

3bi)Vegetables are a source of food to humans.

Vegetables provide herbal medicine to humans.

ii)Plants require oxygen for germination.

Organisms in soil require air to breathe.

3c)Soil profile is the verticle arrangement of layers from top to bottom.

3d)It helps a farmer to know the fertility of the soil.

Explanation:

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.