EXERCISE  3

SECTION  B

Answer all question.

1.   Fill in the blanks with the correct words.

gravity

waste materials

tracheal structures

lungs

reproduce

a.   Human breathes through_______________ .

b.   Animals excrete to remove _______________________ from their bodies.

c.   Grasshoppers and cockroaches breathe through _______________________ .

d.   Plants ___________________to ensure the survival of their species.

e.   Plants respond to water, sunlight and _________________.

 

 

2.   Fill in blanks with the correct words from the box.

stings

poisonous

scales

thorns

live in herds

a.   Centipedes have venomous ______________ on their    

heads that can cause pain and kill their enemies.

b.   A pangolin has hard _______________ to protect its body

from injuries.

c.   Buffaloes __________________________ and move from place to place in numbers.

d.   Pineapple plants are covered with ________________ to protect  themselves from their enemies.

e.   The sap and fruit of the pong-pong tree are ______________ to humans and animals.