Biology PYQ — Page 5
IAS Science — Biology previous year questions with solutions.
All Biology Questions (140)
Which of the following cell organelles play the most significant role in protein synthesis?
Insect resistant cotton plants have been genetically engineered by inserting a gene from a/an
The sensation of fatigue in the muscles after prolonged strenuous physical work is caused by
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.
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
At which stage in its lifecycle does the silkworm yield the fibre of commerce?
Canola refers to special type of oil seed mustard varieties bred for human consumption. The main characteristic of these varieties is that the
The stones formed in human kidney consist mostly of
Which one of the following organisms can serve as a biofertilizer for rice crop?
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.
Phytotron is a facility to
The blood glucose level is commonly expressed as
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:
For which one of the following is capillarity not the reason?
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
In eye donation, which one of the following parts of donor's eye is utilized?
Which one of the following genetic diseases is sex-linked?
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
Ergotism is due to consumption of
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
Consumption of fish is considered to be healthy when compared to flesh of other animals because fish contains
The complete conversion of glucose, in the presence of oxygen, into carbon dioxide and water with release of energy is called.
Haemophilia is a genetic disorder which leads to
Which one of the following type of micro organisms is most widely used in industries?