Question

The Living Organisms and
their Surroundings
CONCEPTUAL EXERCISES (O
AL EXERCISES (Objective Type Questions)
A. Fill in the
iii. Leaf
1. The liv
2. Marine
Hi. Rock
3. Leaves
they
he Choose the most appropriate answer
8. In a cactus plant, the learel
cactus plant, the leaf-like structure is actually a
iv. Root
i. Flower X Stem
D. Sea animals like dolphins and whales breathe through,
iv. Fins
i. Nose
ii. Gills
il. Blowholes
C. Which of the following is an abiotic component
iv. Bacteria
i. Dog
ii. Tree
d. Which of the following is NOT a predator?
iv. Bear
i. Lion
ii. Antelope
iii. Eagle
2. Fill in the blanks.
is evolved
a. During respiration, is used and. is envoled
is used and
b.
is an animal whose process of breathing is similar to humans.
c. Plants and animals constitute the bu
f actor of our surroundings.
d. Changes in our surroundings are called OULUhe
con
4.
The lo
5. Dese
6. Polar
7. Lior
on a
8. The
9. We
3. State whether the following statements are true or false. Also, correct the incorrect statem
a. The surrounding where an animal lives is called its habitat.
b. Breathing is a part of a biochemical process called photosynthesis.
c. The habitats of plants and animals that live on land are called terrestrial habitats.!
d. Living organisms throw body wastes from their bodies by a process called respiration
10. Pla
B. Write
ENRICHMENT EXERCISES (Subjective Type Questions)
1.
A
2.
3.
1. Answer the following questions in brief.
a. Why do cacti have spines instead of leaves?
b. Why are the stems of plants in the ponds long, hollow and light?
c. Write the adaptation in frog and mention its significance.
2. Answer the following questions in detail:
a. You might have heard of 'Kids for Tiger'-a conservation program initiated by 'Sanc
Asia'. Collect some information on the project. Find out the potential tiger habitats in
and mark them on a map of India.
b. Trace the animals and birds that have got extinct due to human activities and their repercus
c. Outline the history of the extinction of dinosaurs.​

Answer 1

Answer:

8-stem of

sea animals like dolphins breathe throung blow holes

tree is abiotic compoumd

antelope is not a predator

3-remocal of waste is called excretion

ans--cactus have spines instead of leaves for less loss of water through transpiration

ans--the stems are hollow to conduct water

ans--skin is full of mucosa glands to prevent dryness of skin

breathing through skin gills and lungs