IAS Science — Biology previous year questions with solutions.
Which one of the following statements is not correct?
The cellular and molecular control of programmed cell death is known as
Octopus is
Consider the following statements: 1. The common blue green algae, Spirogyra and Ulothrix, are found n both fresh water ponds and oceans. 2. The Chameleon can look ahead with one eye, and at the same time look behind with another. Which of these statements is/are correct?
With reference to the human body, consider the following statements: 1. The production of somatotropin goes up when a person exercises. 2. Men's testes produce progesterone. 3. Women's adrenal glands secrete testosterone. 4. Stress causes the adrenals to release very less amount of cortisol than usual. Which of these statements are correct?
With reference to the blood in a normal person, which one of the following statements is correct?
Which one of the following statements is not correct?
Which one of the following Statements IS correct?
Which one of the following is monogamous?
When one gene controls two or more different characters simultaneously, the phenomenon is called
In the context of organic evolution the loss of limbs in snakes is explained by the phenomenon of
In a bisexual flower, if androecium and gynoecium mature at different times, the phenomenon is known as
Consider the following plants 1. Bougainvillea 2. Carnations. 3. Cocoa 4. Grapes Which of these plants are propagated by stem cuttings?
Assertion (A): Human diet should compulsorily contains glycine, serine and tyrosine. Reason (R): Essential amino acids cannot be synthesized in the human body.
Assertion (A): Drinking of whisky increases the frequency of urination. Reason (R): Alcohol intake speeds up the secretion of vasopressin in the body.
Among living organisms, which one of the following is the most responsible factor for bringing about the origin of a new species?
Which organelle in the cell, other than nucleus contains DNA?
Which of the following cell organelles play the most significant role in protein synthesis?
"Metastasis" is the process by which
Match List-I with List-Il and select the correct answer using the codes given below | List-I (Bone) | | List-II (Name) A. | Breastbone | 1. | Clavicle B. | Collarbone | 2. | Patella C. | Kneecap | 3. | Scapula D. | Shoulder blade | 4. | Sternum
Match List-I with List-H and select the correct answer using the codes given below the lists | List-I (Substance) | | List-II (Physiological role) A. | Ptyalin | 1. | Converts angiotensinogen in blood into angiotensin B. | Pepsin | 2. | Digests starch C. | Renin. | 3. | Digests proteins D. | Oxytocin | 4. | Hydrolyses fats | | 5. | Induces contraction of smooth muscles -
In the eye donation, which part of the eye is transplanted from the donor?
Hybridoma technology is a new biotechnological approach for commercial production of
Consider the following statements 1. Tapeworm is a hermaphrodite. 2. Round-worm has separate sexes. 3. Filaria is caused by a nematode. 4. Guinea-worm is an annelid. Which of these are correct?