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Biology PYQ — Page 5

IAS ScienceBiology previous year questions with solutions.

All Biology Questions (140)

Which of the following cell organelles play the most significant role in protein synthesis?

2001
easy
mcq

Insect resistant cotton plants have been genetically engineered by inserting a gene from a/an

2000
easy
mcq

The sensation of fatigue in the muscles after prolonged strenuous physical work is caused by

2000
easy
mcq

Assertion (A): “DNA Finger­ printing” has become a powerful tool to establish paternity and identity of criminals in rape and assault cases. Reason (R): Trace evidences such as hairs, saliva and dried semen are adequate for DNA analysis.

2000
medium
mcq

Match List I (Endocrine glands) with List II (Hormones secreted) and select the correct answer using the codes given below the Lists: List I | List II I. Gonads | A) Insulin II. Pituitary | B) Progesterone III. Pancreas | C) Growth hormones IV. Adrenal | D) Cortisone

2000
medium
mcq

At which stage in its life­cycle does the silkworm yield the fibre of commerce?

2000
easy
mcq

Canola refers to special type of oil seed mustard varieties bred for human consumption. The main characteristic of these varieties is that the

2000
medium
mcq

The stones formed in human kidney consist mostly of

2000
easy
mcq

Which one of the following organisms can serve as a biofertilizer for rice crop?

2000
easy
mcq

Assertion (A): In human beings, the females play a major role in determining the sex of the offspring. Reason (R): Women have two ‘X’ chromosomes.

2000
medium
mcq

Phytotron is a facility to

2000
medium
mcq

The blood glucose level is commonly expressed as

2000
easy
mcq

Match List I (Diseases) with List II (Types of disease) and select the correct answer using the codes given below the Lists: List I | List II I. Haemophilia | A) Deficiency disease II. Diabetes | B) Genetic disease III. Diabetes | C) Hormonal disorder IV. Ringworm | D) Fungal infection Codes:

2000
medium
mcq

For which one of the following is capillarity not the reason?

1999
medium
mcq

Match the hormones in List-I with items in List-II and select the correct answer using the codes given below: | List- I | | List-II A. | Adrenaline | 1. | Anger, fear, danger B. | Estrogen | 2. | Attracting partners through sense of smell C. | Insulin | 3. | Females D. | Pheromones | 4 | Glucose Codes: ABCD

1999
medium
mcq

In eye donation, which one of the following parts of donor's eye is utilized?

1999
easy
mcq

Which one of the following genetic diseases is sex-linked?

1999
easy
mcq

Match List-I with List-II and select the correct answer using the codes given below the lists: | List-I | | List-II A. | Theory of mutation | 1. | Beadle and Tatum B. | Theory of evolution | 2. | Jacob and Monad C. | One gene one enzyme hypothesis | 3. | Darwin D. | Operon concept | 4. | de Vries Codes: ABCD

1998
easy
mcq

Ergotism is due to consumption of

1998
easy
mcq

Match List-I with List-II and select the correct answer by using the codes given below the lists | List-I | | List-II A. | Fniit | 1. | Ovule B. | Seed | 2. | Leaf C. | Wood | 3. | Stem D. | Starch | 4. | Ovary Codes: ABCD

1998
easy
mcq

Consumption of fish is considered to be healthy when compared to flesh of other animals because fish contains

1998
easy
mcq

The complete conversion of glucose, in the presence of oxygen, into carbon dioxide and water with release of energy is called.

1998
easy
mcq

Haemophilia is a genetic disorder which leads to

1998
easy
mcq

Which one of the following type of micro organisms is most widely used in industries?

1998
easy
mcq