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Published on: 13/05/2022
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Questions + Answers key
Take MCQ Biology Test1.
Complete the table.
| Natural Parthenogenesis | Sex of developing organism | |
|---|---|---|
| i. | Arrhenotoky | A |
| ii. | Thelytoky | B |
| iii. | Amphitoky | C |
2.
(i) Identify the animal
(ii) What is significant about the animal.
3.
What is apolysis? Write its significance.
4.
What is strobilation?
5.
Explain multiple fission in plasmodium.
1.
A - Only males ;
B - Only Females ;
C - Both Males & Females
2.
(i) Aurelia
(ii) The Significance is that Aurelia reproduces asexually by a special type of transverse fission called strobilation.
3.
(i) In Tape worm the gravid proglottids are regularly cut off either singly or in groups from the posterior end by a process called apolysis.
(ii) This is very significant since it helps in transferring the developed embryos from the primary host (man) to find a secondary host (pig).
4.
(i) In some metazoan animals, a special type of transverse fission called strobilation occurs.
(ii) In the process of strobilation, several transverse fissions occur simultaneously giving rise to a number of individuals which often do not separate immediately from each other. E.g. Aurelia.
5.
(i) In Plasmodium, multiple fission occurs in the schizont and in the oocyte stages. When multiple fission occurs in the schizont, the process is called schizogony and the daughter individuals are called merozoites.
(ii) When multiple fission occurs in the oocyte, it is called sporogony and the daughter individuals are called sporozoites.
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Tamilnadu Stateboard 12th Standard Subjects
Maths
Chemistry
Physics
Biology
Computer Science
Business Maths and Statistics
Economics
Commerce
Accountancy
History
Computer Applications
Biology
Computer Technology
Computer Applications
Computer Science
Business Maths and Statistics
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