(a) Name the tropical sugar cane variety grown in South India. How has it helped in improving the sugar cane quality grown in North India?
(b) Identify 'a', 'b' and 'c' in the following table:
No | Crop | Variety | Insect Pests |
1 | Brassica | Pusa Gaurav | (a) |
2 | Flat bean | Pusa Sem 2 Pusa sem 3 |
(b) |
3 | (c) | Pusa Sawani Pusa A-4 |
Shoot and fruit borer |
(i) The tropical sugarcane variety grown in Southern India is Saccharum officinarum which has a thicker stem and high sugar content; however, it cannot grow in Northern India. Saccharum barberi is a natively grown in Northern India.
These two varieties were crossed to get the desirable qualities of both (higher sugar content, thicker stem and the ability to grow in Northern India).
(ii)
No | Crop | Variety | Insect Pests |
1 | Brassica | Pusa Gaurav | Aphids |
2 | Flat bean | Pusa Sem 2 Pusa sem 3 |
Jassids and fruit borer |
3 | Okra (Bhindi) | Pusa Sawani Pusa A-4 |
Shoot and fruit borer |
Fill in the blanks:
(a) Humans reproduce __________. (asexually/sexually)
(b) Humans are__________. (oviparous/viviparous/ovoviviparous)
(c) Fertilization is __________ in humans. (external/internal)
(d) Male and female gametes are __________. (diploid/haploid)
(e) Zygote is __________. (diploid/haploid)
(f) The process of release of the ovum from a mature follicle is called__________.
(g) Ovulation is induced by a hormone called the __________.
(h) The fusion of male and female gametes is called _____________.
(i) Fertilisation takes place in _____________.
(j) Zygote divides to form _____________which is implanted in uterus.
(k) The structure which provides vascular connection between fetus and uterus is called ____________.
Consult internet and find out how to make orally active protein pharmaceutical. What is the major problem to be encountered?