Biology problems
- 1. Nuclear membrane is absent in
Options- A. Volvox
- B. Penicillium
- C. Agaricus
- D. Nostoc Also asked in: AIEEE, Bank Exams, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: Nostoc
- 2. Which part of Nervous system controls involuntary actions
Options- A. Medulla oblongata
- B. Cerebellum
- C. Hypothalamus
- D. Spinal cord Discuss
Correct Answer: Medulla oblongata
- 3. The Vitamin required for the synthesis of nucleic acid is
Options- A. Tocoferorl
- B. Folic acid
- C. Cyanocobalamine
- D. Riboflavin Discuss
Correct Answer: Folic acid
- 4. Monocarpic plants are those that produce fruits ...............during the life of the plant
Options- A. once
- B. thrice
- C. many times
- D. twice Discuss
Correct Answer: once
Explanation:
Plants are of different types. Some grow well and then produce fruits before they die. In other words they fruit only once in their life. Such plants are said to be monocarpic. Other plants produce fruits every season. These are called polycarpic plants.
- 5. Which of the following is the largest phyllum in the animal kingdom in respect of number of species
Options- A. Annalida
- B. Platyhelminthes
- C. Chordata
- D. Arthropoda Discuss
Correct Answer: Arthropoda
- 6. The leaves used as wrappers for bides are obtained from which one of the following ?
Options- A. Shikakai
- B. Rudraksha
- C. Tendu
- D. Lemon grass Discuss
Correct Answer: Tendu
- 7. The enzyme that is necessary to bring about clotting of blood is
Options- A. peptidase
- B. amylase
- C. lipase
- D. thrombokinase Discuss
Correct Answer: thrombokinase
Explanation:
The clotting of blood is a chain reaction initiated by the enzyme Thrombokinase produced by the platelets. This causes Prothrombin and calcium salts in plasma to join and produce thrombin. Thrombin combines with Fibrinogen to produce Fibrin threads which entangles the corpuscles to create a clot.
- 8. Cutaneous respiration occurs in
Options- A. Cockroach
- B. Salamander
- C. Crab
- D. Parrot Discuss
Correct Answer: Salamander
- 9. There are approximately how many muscles in Human body ?
Options- A. 206
- B. 310
- C. 554
- D. 700 Also asked in: AIEEE, Bank Exams, Bank Clerk
Correct Answer: 700
Explanation:
Approximatey there are 700 muscles in Human body.
- 10. In plants, exchange of gases takes place through
Options- A. Stomata
- B. Palisade tissue
- C. Spongy tissue
- D. mid rib Discuss
Correct Answer: Stomata
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