Скачать или смотреть BZYCT-131 Animal Diversity Solved IGNOU Assignment | Zoology | Handwritten With Diagrams

In this video you will get handwritten solutions of IGNOU assignments and an idea on how to write answers . This video is for course code BZYCT-131 Animal Diversity , subject zoology . This assignment is for B.Sc first year students. This is just for reference you can write your answers according to your knowledge or otherwise you can copy it as it is. Solved assignment for ignou .


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Part-A Maximum Marks: 50
1. Fill in the blanks with suitable words: (10)
a) Digestion is ……………… in Branchiostoma.
b) Elasmobranchs have a ……………… mouth.
c) The flagellated chamber of the canal system of sponges is lined by
……………… .
d) The ……………… of the filarial worm releases small microfilariae into
blood and lymphatic system.
e) The special comb-like sense organs of scorpions are ……………… .
f) The fused pair of maxillae of millipedes is called ……………… .
g) ……………… is the only living genus under the subclass Nautiloidea.
h) In cephalopods a pair of ……………… hearts pump the blood through the
gills.
i) Nephridia are ……………… in hemichordates.
j) The bipinnaria larva of ……………… is similar to tornaria larva.

2. Describe parental care in amphibians. (10)

3. What is parasitic adaptation? Explain the adaptations that have taken place in Ascaris lumbricoides. (10)

4. Write short notes on the following : (10)
a) Book lungs of Arachnida
b) Pectines of scorpions

5. What is meant by torsion? Explain the process in detail. (10)

Part-B Maximum Marks: 50

6. State whether the following statements are True (T) or False (F) (10)
i) Presence of cranium and paired appendages is a characteristic feature of
Agnatha.
ii) Gonangium is a sexual way of reproduction.
iii) The excretory organs of crustaceans are called antennary or maxilliary
glands depending on their position.
iv) The two pairs of insect wings are articulated with pro and mesothorax.
v) The secretion of prothoracic glands regulates metamorphosis in insects.
vi) Class Xiphosura is regarded as living fossil.
vii) Development in bivalves includes trochophore and veliger larvae.
viii) The blood of cephalopods contains haemocyanin.
ix) In brittle stars tube feet aid in locomotion.
x) Aristotle's lantern is a complex chewing organ of sea urchin.

7. Describe canal system in Porifera. (10)

8. a) Write unique features of Phylum Ciliophora. (5)
b) State the affinities of Hemichordates with Echinoderms. (5)

9. Describe the important adaptations found in birds that allow them to fly. (10)

10. a) Describe the most important adaptations in reptiles that allowed them to
make a complete transition from water to land environment.(5)
b) Differentiate between the following pairs:(5)
i) Orders Perissodactyla and Artiodactyla
ii) Infra classes Eutheria and Metatheria

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