Match the following columns and select the correct option:
Column I
Column II
(a)
Rods and cones
(i)
Absence of Cones photoreceptor cells
(b)
Blind Spot
(ii)
Cones are densely packed
(c)
Fovea
(iii)
Photoreceptor cells
(d)
Iris
(iv)
Visible coloured portion of the eye
Options:
(a)
(b)
(c)
(d)
1.
(iii)
(i)
(ii)
(iv)
2.
(ii)
(iii)
(i)
(iv)
3.
(iii)
(iv)
(ii)
(i)
4.
(ii)
(iv)
(iii)
(i)
Match the following columns and select the correct option:
| Column-I | Column-II | ||
| (a) | Pituitary hormone | (i) | Steroid |
| (b) | Epinephrine | (ii) | Neuropeptides |
| (c) | Endorphins | (iii) | Peptides, proteins |
| (d) | Cortisol | (iv) | Biogenic amines |
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (i) | (ii) | (iii) |
| 2. | (iii) | (iv) | (ii) | (i) |
| 3. | (iv) | (iii) | (i) | (ii) |
| 4. | (iii) | (iv) | (i) | (ii) |
Hormones stored and released from neurohypophysis are:
1. Thyroid-stimulating hormone and Oxytocin
2. Oxytocin and Vasopressin
3. Follicle-stimulating hormone and luteinizing hormone
4. Prolactin and Vasopressin
In some plants, the thalamus contributes to fruit formation. Such fruits are termed as:
1. False fruits
2. Aggregate fruits
3. True fruits
4. Parthenocarpic fruits
Which of the following is incorrect for wind-pollinated plants?
1. Well exposed stamens and stigma
2. Many ovules in each ovary
3. Flowers are small and not brightly colored
4. Pollen grains are light and non-sticky
In human beings, at the end of 12 weeks (first trimester) of pregnancy, the following is observed:
1. Eyelids and eyelashes are formed
2. Most of the major organ systems are formed
3. The head is covered with fine hair
4. Movement of the fetus
Select the correct option of haploid cells from the following groups :
| 1. | Primary oocyte, Secondary oocyte, Spermatid |
| 2. | Secondary spermatocyte, First polar body, Ovum |
| 3. | Spermatogonia, Primary spermatocyte, Spermatid |
| 4. | Primary spermatocyte, Secondary spermatocyte, Second polar body |
Match the following columns and select the correct option:
| Column I | Column II | ||
| (a) | Ovary | (i) | Human chorionic gonadotropin |
| (b) | Placenta | (ii) | Estrogen & Progesterone |
| (c) | Corpus luteum | (iii) | Androgens |
| (d) | Leydig cells | (iv) | Progesterone only |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iv) | (iii) | (ii) | (i) |
| 2. | (i) | (ii) | (iii) | (iv) |
| 3. | (i) | (iii) | (ii) | (iv) |
| 4. | (ii) | (i) | (iv) | (iii) |
Progestogens alone or in combination with estrogens can be used as a contraceptive in the form of:
1. Implants only
2. Injections only
3. Pills, injections and implants
4. Pills only
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