Vivipary automatically limits the number of offspring’s in a litter. How?
i. Vivipary is defined, where the seed grows first to break through the seed coat then out of the fruit wall while still attached to the parent plant. But not many seeds can grow on single parent plant, hence they will fall to ground around the parent plant. Here in a struggle to get enough oxygen from the soil (mostly marshy lands), many seedlings die. Out of the left out seedlings as they grow they struggle to get enough sunlight, and many others don’t survive. So the numbers of offsprings’ are limited.
ii. Vivipary in aniamals – here embryo develops inside the body of female. A litter is the offspring at one birth of animals from the same mother. A litter usually are 3-8 offsprings together. The vivipary automatically limits the number of offsprings in a litter due to the reason that limited number of eggs are produced and fertilized during female reproductive cycle.
Rate this question :
In the given diagram, write the names of parts shown with lines.
Biology - Exemplar
(a) Trace the development of an endosperm after fertilisation with reference to coconut. Mention the importance of endosperm development.
(b) Write the importance of ‘pollen bank’.
Biology - Board Papers
List the changes observed in an angiosperm flower subsequent to pollination and fertilisation.Biology - Exemplar