Thursday, January 31, 2019

WBCS Polity and Constitution MCQs Prelims and Mains

General Science Topics MCQ -Biology [WBCS|SSC|UPSC|RAIL] P1


1. Birds differ from the bat in the absence of
(A) Trachea
(B) Diaphragm
(C) Warmblood
(D) Four-chambered heart.
Correct Answer: [A] Trachea.


2. Grub is the larva of
(A) Beetle
(B) Sponges
(C) Insects
(D) Crustacea.
Correct Answer: [A] Beetle.


3. Which one of the following animal phylum is latest by discovery?
(A) Loricifera
(B) Ctenophora
(C) Pogonophora
(D) Kinorhyncha.
Correct Answer: [A] Loricifera.


4. A mammal that lays eggs:
(A) Pteropus
(B) Lemur
(C) Talpa
(D) Echidna.
Correct Answer: [D] Echidna..


5. The disease caused by the deficiency of vitamin B12
(A) Normocytic anemia
(B) Pernicious anemia.
(C) Aplastic anemia
(D) Sickle cell anemia.
Correct Answer: [B] Pernicious anemia..


6. A plant cell shrinks when placed in
(A) A hypertonic solution
(B) A hypotonic solution
(C) Water
(D) A solution is isotonic with the cell sap.
Correct Answer: [A] A hypertonic solution.


7. Which of the following becomes zero in a fully turgid cell?
(A) Osmotic pressure
(B) All of the above
(C) Water potential
(D) Wall pressure.
Correct Answer: [A] Osmotic pressure.


8. The longest cell in animals is
(A) Blood cell
(B) Muscle cell Important
(C) Nerve cell
(D) Hepatocyte (liver cell).
Correct Answer: [C] Nerve cell.


9. Crossing over occurs during meiosis at
(A) Pachytene
(B) Diakinesis
(C) Leptotene
(D) Anaphase -I.
Correct Answer: [A] Pachytene.


10. According to a cellular structure which one of the following is most complex?
(A) Algae
(B) Fungi
(C) Bacteria
(D) Protozoa.
Correct Answer: [B] Fungi.



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