How many true-breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits?
| 1. | 2 | 2. | 14 |
| 3. | 6 | 4. | 4 |
Snow-blindness in Antarctic regions is due to:
| 1. | Inflammation of cornea due to high doses of UV-B radiation |
| 2. | High reflection of light from snow |
| 3. | Damage to the retina caused by infra-red rays |
| 4. | Freezing of fluids in the eye because of the low temperature |
The enzyme enterokinase helps in the conversion of
1. trypsinogen into trypsin
2. caseinogen into casein
3. pepsinogen into pepsin
4. protein into polypeptides
Match the following with respect to meiosis:
| Column-I | Column-II | ||
| (a) | Zygotene | (i) | Terminalization |
| (b) | Pachytene | (ii) | Chiasmata |
| (c) | Diplotene | (iii) | Crossing over |
| (d) | Diakinesis | (iv) | Synapsis |
Select the correct option from the following:
| Options: | (a) | (b) | (c) | (d) |
| 1. | iv | iii | ii | i |
| 2. | i | ii | iv | iii |
| 3. | ii | iv | iii | i |
| 4. | iii | iv | i | ii |
Which of the following statements about inclusion bodies is incorrect?
| 1. | These are involved in the ingestion of food particles. |
| 2. | They lie freely in the cytoplasm. |
| 3. | These represent reserve material in cytoplasm. |
| 4. | They are not bound by any membrane. |
Match the following columns and select the correct option:
| Column-I | Column-I | ||
| (a) | Eosinophils | (i) | Immune response |
| (b) | Basophils | (ii) | Phagocytosis |
| (c) | Neutrophils | (iii) | Acidophils |
| (d) | Lymphocytes | (iv) | Release granules containing histamine |
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (i) | (ii) | (iii) |
| 2. | (i) | (ii) | (iv) | (iii) |
| 3. | (ii) | (i) | (iii) | (iv) |
| 4. | (iii) | (iv) | (ii) | (i) |
The transverse section of a plant shows following anatomical features:
| a. | Large number of scattered vascular bundles surrounded by bundle sheath. |
| b. | Large conspicuous parenchymatous ground tissue. |
| c. | Vascular bundles conjoint and closed. |
| d. | Phloem parenchyma absent. |
Identify the category of plant and its part :
| 1. | Monocotyledonous root |
| 2. | Dicotyledonous stem |
| 3. | Dicotyledonous root |
| 4. | Monocotyledonous stem |
Match the following columns and select the correct option:
| Column-I | Column-II | ||
| (a) | Pituitary gland | (i) | Grave's disease |
| (b) | Thyroid gland | (ii) | Diabetes mellitus |
| (c) | Adrenal gland | (iii) | Diabetes insipidus |
| (d) | Pancreas | (iv) | Addison's disease |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iii) | (ii) | (i) | (iv) |
| 2. | (iii) | (i) | (iv) | (ii) |
| 3. | (ii) | (i) | (iv) | (iii) |
| 4. | (iv) | (iii) | (i) | (ii) |
Match the following columns and select the correct option.
| Column-I | Column-II | ||
| a. | Placenta | (i) | Androgens |
| b. | Zona pellucida | (ii) | Human chronic Gonadotropin |
| c. | Bulbo-urethral glands | (iii) | Layer of the ovum |
| d. | Leydig cells | (iv) | Lubrication of the Penis |
| a | b | c | d | |
| 1. | (i) | (iv) | (ii) | (iii) |
| 2. | (iii) | (ii) | (iv) | (i) |
| 3. | (ii) | (iii) | (iv) | (i) |
| 4. | (ii) | (iv) | (i) | (ii) |
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