ANIMAL KINGDOM
1. Identify the word pair
applicable to phylum Ctenophora. (Score 1)
a. Nephridia, Parapodia
b. Comb plates, Bioluminescence
c. Polyp, Metagenesis
d. Radula, Visceral hump
Answer:
(b) Comb plates, Bioluminescence.
2. Characteristics of
certain animals are given. Arrange them under the Class to which these animals
belong. (Score 2)
i. Skin
is moist without scales.
ii. Body
is covered by dry and cornified skin.
iii. Shed
the scales as skin cast.
iv. Can
live in aquatic as well as terrestrial habitats
Answer:
(i) & (iv) Class Amphibia
(ii) & (iii) Class Reptilia
3. Observe the figures. (Score 3)
a. Identify the organisms
A, B & C.
b. Name the phylum to which
each of them belongs.
Answer:
(a) A= Balanoglossus, B= Neries,
C= Liver fluke (Fasciola).
(b) A= Hemichordata, B= Annelida, C=
Platyhelminthes
4. Unlike bony fishes,
cartilage fishes swim constantly to avoid sinking due to the (Score 1)
a. Presence of pharyngeal
gill slits
b. Presence of air bladder
c. Absence of pharyngeal
gill slits
d. Absence of air bladder
Answer:
(d) Absence of air bladder.
5. The following are organs
of certain animals:
Parapodia, Nephridia, Malpighian tubules, Comb
plates
a. Select organs helps in excretion.
b. Name the phyla bearing
the above structures. (Score 3)
Answer:
a. Nephridia, Malpighian tubules.
b. Parapodia: Phylum Annelida.
Nephridia:
Phylum Annelida.
Malpighian
tubules: Phylum Arthropoda.
Comb
plates: Phylum Ctenophora
6. Complete the flowchart
given below. (Score 2)
Answer:
(a) Gnathostomata
(b) Cyclostomata
(c) Tetrapoda
(d) Osteichthyes
7. Find the odd one from
each group. Justify your answer.
a. Starfish, Devilfish, Dogfish,
Jellyfish
b. Flying fish, Angelfish, Sawfish,
Fighting fish
c. Sea lily, Sea cucumber, Sea hare,
Sea urchin
Answer:
(a) Dog fish. It is true fish. Others are not true fishes and are invertebrates.
(b) Sawfish. It comes under the class Chondrichthyes. Others belong to Osteichthyes.
(c) Sea hare. It belongs to Mollusca. Others are echinoderms.
8. Observe the figure of an
organism given: (Score 2)
a. Identify the organism.
b. Name the class to which
it belongs.
c. Mention any two salient
features of the class.
Answer:
(a) Hippocampus (Seahorse).
(b) Osteichthyes.
(c) Bony fishes, scales are cycloid, ctenoid etc., gills covered by operculum.
9. Note the relationship
between two words and find a suitable word for the fourth place. (Score 1)
Platyhelminthes: ………………
b. Lizard: Poikilothermous
Answer:
(a) Bilateral symmetry.
(b) Homoeothermous.
10. Which of the following
animal exhibit Metagenesis? (Score 1)
Ascaris, Obelia, Earthworm, Crab
Answer:
Obelia
11. From a fish market, you
got a fish, on a close watching your friend says it is a cartilaginous fish.
a. Which characters helped him
to identify it as a cartilaginous fish (any four characters)?
b. Name the class it
belongs to. (Score 2)
Answer:
a) Placoid scales, ventral mouth, operculum absent, air bladder absent.
b) Chondrichthyes.
12. Note the relation in the
first pair and then complete the second pair. (Score 1)
Fasciola: Liver fluke
Taenia: .........?........
Answer:
Tapeworm
13. Names of certain animals are given below. Write the phylum of each animal. (Score 2)
a) Pila
b) Pleurobrachia
c) Nereis
d) Spongilla
Answer:
a) Mollusca
b) Ctenophora
c) Annelida
d) Porifera
14. Observe the diagram
showing the characteristics of a phylum. (Score 3).
a. Identify the Phylum.
b. Name the Part labeled
‘A’.
c. Point out the three
fundamental characters of the phylum.
Answer:
a) Chordata.
b) Nerve cord.
c) Presence of notochord.
Presence of pharyngeal gill slits.
Presence of post-anal tail.
15. Note the relationship in
the first pair and then complete the second pair. (Score 1)
Osteichthyes: Cycloid scales
Chondrichthyes: …………...
Answer:
Placoid
scales.
16. Arrange the following
terms under two headings based on symmetry (Score 1)
Arthropods. Ctenophores, Molluscs,
Coelenterates
Answer:
Radial symmetry: Coelenterates,
Ctenophores.
Bilateral symmetry: Arthropods, Molluscs.
17. a) A table showing
examples of vertebrates is given below. But some of the examples are wrongly given.
Identify and rearrange it. (Score 3)
|
Pisces |
Amphibia |
Reptilia |
Aves |
Mammalia |
|
Dogfish |
Frog |
Vulture |
Penguin |
Alligator |
|
Blue whale |
Rohu |
Tortoise |
Salamander |
Flying fox |
b)
Which of the above-mentioned class is characterised by the presence of pneumatic
bone?
Answer:
(a)
|
Pisces |
Amphibia |
Reptilia |
Aves |
Mammalia |
|
Dogfish |
Frog |
Alligator |
Penguin |
Blue whale |
|
Rohu |
Salamander |
Tortoise |
Vulture |
Flying fox |
(b) Class Aves.
18. Find out the
pseudocoelomate animal from the following: (Score 1)
Answer:
Hookworm.
19. Features of different phyla/classes are given below. Identify the phylum/class
and give examples of each group. (Score 2)
a) The body is covered by scales, heart is three or four-chambered. They
respire through lungs.
b) They are exclusively marine, commonly called sea walnuts, and show
bioluminescence.
Answer:
(a) Class
Reptilia. E.g. Calotes, Crocodilus.
(b)
Phylum Ctenophora. E.g. Pleurobrachia.
20.
Categorize the following animals under radial symmetry and bilateral
symmetry. (Score 2)
Physalia, Tapeworm, Fasciola, Adamsia
Answer:
Radial symmetry: Physalia, Adamsia.
Bilateral
symmetry: Tapeworm, Fasciola.
21. Observe the following features of animals and answer the following
questions. (Score 2)
- Moist skin
- Hooks and suckers
- Pneumatic bones
- Dry and non-glandular skin
- Metamerism
a. Select the flight adaptation of birds.
b. Select the amphibious adaptation of the frog.
Answer:
(a) Pneumatic
bones, Dry and non-glandular skin.
(b) Moist
skin.
22. Prawns and insects are included in the phylum Arthropoda while they have different habits and
habitats. Justify your answer. (Score 2)
Answer:
Prawns
and insects have jointed legs and chitinous cuticle.
23. Figures (X) & (Y) are the fish of two different classes. Identify
them and differentiate between these classes. (Score 2).
X= Chondrichthyes. Cartilaginous
endoskeleton, placoid scales, etc.
Y= Osteichthyes. Bony endoskeleton,
cycloid scales, etc.
24. Birds are well adapted for flying. Give any three of such adaptations. (Score 3)
Answer:
- Presence of wings and beak.
- Pneumatic bones.
- Air sacs connected to lungs.