Differentiate between an annual and biennial plant. Provide one example of each.
Differences between annual and biennial plants are as follows:
Annual Plant | Biennial Plant |
These plant complete their life cycle in one year | These are monocarpic plants, flowers and die in the second season so complete their life cycle in two years. |
Vegetative growth and reproduction phase occur in one year | Show vegetative growth in one season and reproductive phase in second season. |
Since these plants require less time so low maintenance required |
It takes double time to grow than annual plants so high maintenance requried. |
e.g. Wheat, rye, barley | e.g. carrot, cabbage, raddish |
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 ____________.
Explain the following terms with example
(a) Co-dominance
(b) Incomplete dominance