AIIMS Zoology Questions

Virus free plants can be generated through-

Virus free plants can be formed by

Percentage of (G + C) is

Non-viable seeds are produced by

Assertion: Somaclonal variations produce slight differences in plant Reason: In bacteria, transcription and translation occurs in cytoplasm

Plasmid of which bacterium was first time used in recombinant DNA technology?

Assertion: Isolated protoplasts are used for somatic hybridisation Reason: Callus culture does not allow variation

Which of the following integrates Nervous and endocrine system

Choose the correct option

Identify the given diagram of tissue performing secretion and absorption

Identify the following diagram

Oxytocin and ADH are produced by hypothalamus and released from

Skeletal muscles are controlled by -

Choose the correct option for the labelling in the given diagram (A, B, C, D)

Activity of phagocytosis occurs through

Assertion: SA node malfunctioning leads to disturbance of Heart rate Reason: SA node is the pacemaker of heart producing electric impulse for heart contraction

Choose the correct statement for Periplaneta americana

Animal of which phylum have hooks and suckers and are endoparasite on other animals

Assertion: Type-I diabetes is caused by destruction of B cells of islets of Langerhans. Reason: Insulin can be taken as pills.

Assertion: Pituitary gland releases a hormone which is helpful in child birth. Reason: Pituitary gland releases vasopressin and anti diuretic hormone which helps in child birth.

Which of the following linkage is found in sucrose?

In Gene cloning:

Assertion: 70 percent of CO₂ formed from catabolism is trapped as bicarbonate in the RBCs at the tissue level. Reason: At tissue level, carbonic anhydrase in RBCs facilitates the formation of CO₂ and H₂O from bicarbonate.

Assertion: Pneumotaxiccentre is situated in Pons Reason: It can regulate the functioning of rhythm centre.

Assertion : $100\text{ ml}$ of blood delivers $5\text{ ml}$ $\text{O}_2$ to tissues in normal conditions Reason : One molecule of $\text{Hb}$ can bind with 4 molecules of $\text{O}_2$

Assertion: Interferons are effective against viruses. Reason: Proteins which can be synthesized only by genetic engineering are effective against viruses.

Assertion: Cockroach shows sexual dimorphisms. Reason: The female cockroach bears a pair of short thread like anal styles.

Which one of the following is the correct matching of a vitamin, its nature and its deficiency disease?

Which one of the following options is correct regarding the digestion of food substrates? <table><thead><tr><th></th><th>Substrate</th><th>Enzyme</th><th>Site of action</th><th>Product</th></tr></thead><tbody><tr><td><strong>(a)</strong></td><td>Starch</td><td>Amylase</td><td>Stomach</td><td>Maltose</td></tr><tr><td><strong>(b)</strong></td><td>Protein</td><td>Pepsin</td><td>Duodenum</td><td>Peptones</td></tr><tr><td><strong>(c)</strong></td><td>Lipid</td><td>Lipase</td><td>Pancreas</td><td>Fat globules</td></tr><tr><td><strong>(d)</strong></td><td>Sucrose</td><td>Invertase</td><td>Duodenum</td><td>Glucose and Fructose</td></tr></tbody></table>

Which of the following is the action of insulin?

The contraction of the muscle continues in sliding filament theory

Read the Assertion and Reason carefully to mark the correct option from those given below Assertion Urinary bladder is lined by transitional epithelium. Reason Transitional epithelium keeps the size of the urinary bladder constant at all time.

Read the Assertion and Reason carefully to mark the correct option from those given below Assertion: Arteries pump blood away from the heart at very low pressure. Reason: Arteries have thin wall with large lumen.

In each of the following questions statement of Assertion is given followed by corresponding statement of Reason. Of the statements, mark the correct answer as Assertion (A) In ECG graph of heart pulse 'R' is the peak point. Reason (R) It shows the atrial depolarisation which takes 0.3 seconds.

Which of the following is a cloning vector?

Intercalated discs are characteristic of muscles found in

In Miller's experiment, he used a mixture of CH₄, NH₃, H₂ and water vapour in a closed flask to mimic early earth conditions. What was the temperature at which this flask was kept?

Sexual stage (gametocytes) of Plasmodium occurs in

From the following groups, select the one which has only secondary metabolites

Genetically modified (GM) crops can be produced by

Match the source gland with its respective hormone and function and select the correct option.

Which of the following is true for the labelled parts in the figure below?

Carbon dioxide (CO₂) diffuses into blood from tissue site and passes to alveolar site in the form of

Select the option having all the correct characteristics.

Assertion: All proteinecous enzymes have a three-dimensional structure. Reason: The secondary structure of protein is according to amino acid present inside the polypeptides.

Assertion: Glutamine contains amide group. Reason: Isoelectric point of glutamine is 7.

Assertion : Glycerides are important nutrients for body. Reason : Glycerides are hydrolysed into glycerol and fatty acids which are further absorbed in intestine by the formation of chylomicron.

Acrosome reaction in sperm is triggered by

You are required to draw blood from a patient and to keep it in a test tube for analysis of blood corpuscles and plasma. You are also provided with the following four types of test tubes. Which of these will you not use for the purpose?

Smoking addiction is harmful because it produces polycyclic aromatic hydrocarbons, which cause