Biology problems
- 1. The grouping of blood is based on substances called
Options- A. antibodies
- B. antigens
- C. antitoxin
- D. enzymes Discuss
Correct Answer: antigens
Explanation:
The red blood corpuscles or Erythrocytes usually carry antigens and there are two types of antigens. The A group persons have antigen A in their red corpuscles and the B group have antigen A in their red corpuscles.The AB group persons have both antigen A and antigen B in their erythrocytes.The 'O'group persons have no antigens in their red corpuscles.
- 3. Which is the Largest Organ in the Human Body?
Options- A. Heart
- B. Brain
- C. Skin
- D. Liver Also asked in: AIEEE, Bank Exams, GATE, GRE, Analyst, Bank PO
Correct Answer: Skin
Explanation:
There are about 70 organs in the human body. The Top 10 largest organs in the human body based on size are:
1. Skin
2. Liver
3. Brain
4. Lungs
5. Heart
6. Kidneys
7. The Spleen
8. The Pancreas
9. Thyroxin
10. The Prostrate.
- 4. In which of the following mammals estrous cycle is absent ?
Options- A. Rabbit
- B. Horse
- C. Cow
- D. Monkey Also asked in: AIEEE, Bank Exams
Correct Answer: Monkey
- 5. Deficiency of 'Thiamine'
Options- A. Beri-Beri
- B. Pellagra
- C. Anaemia
- D. Rickets Discuss
Correct Answer: Beri-Beri
- 6. The story of vitamins dates back to
Options- A. 15th century
- B. 16th century
- C. 17th century
- D. 18th century Discuss
Correct Answer: 18th century
- 7. One of the following cannot be performed by animals
Options- A. Respiration
- B. Photosynthesis
- C. Reproduction
- D. Digestion Discuss
Correct Answer: Photosynthesis
- 8. The water readily available to plants for absorption by roots is
Options- A. Gravitational water
- B. Rain water
- C. Hygroscopic water
- D. Capillary water Also asked in: AIEEE, Bank Exams
Correct Answer: Capillary water
- 9. Man has _____ pairs of salivary glands
Options- A. 3
- B. 4
- C. 6
- D. 8 Discuss
Correct Answer: 3
Explanation:
Salivary glands of man are 3 pairs = 6. They are one pair of parotid glands, one pair of sub-maxillary or sub-mandibular glands and one pair of sub-lingual glands.
- 10. Palaeobotany is the branch of botany is which we study about
Options- A. Animal fosills
- B. Plant fossils
- C. Seed of plant
- D. Flower Discuss
Correct Answer: Plant fossils
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