Choose any three microbes, from the following which are suited for organic farming which is in great demand these days for various reasons. Mention one application of each one chosen.
Mycorrhiza; Monascus; Anabaena; Rhizobium; Methanobacterium; Trichoderma.
Following three microbes can be chosen for organic farming:
Mycorrhiza: It helps in trapping nitrogen for the plants. Anabaena: It is involved in the process of nitrogen fixation. Rhizobium: It also plays a role in nitrogen fixation.
Monascus: It produces a group of drugs called statins that are used to lower the cholesterol in body.
Methanobacterium: It is used in the biological generation of methane by anaerobic processes. Trichoderma: It produces cyclosporin A which is used as an immunosuppressive agent.
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 ____________.