Differentiate between:
$(a)$ Integument and testa;
$(b)$ Perisperm and pericarp.
$(a)$
Integument | Testa |
It is the outermost covering of an ovule. It provides protection to it. | It is the outermost covering of a seed. |
$(b)$
Perisperm | Pericarp |
It is the residual nucellus which persists. It is present in some seeds such as beet and black pepper. | It is the ripened wall of a fruit, which develops from the wall of an ovary. |
Which one of the following statements is not true?
If the diploid number of an angiospermic plant is $24$, the number of chromosomes in the pollen grain, endosperm and integument will be
The plant parts which consist of two generations one within the other
$(a)$ Pollen grains inside the anther
$(b)$ Gemninated pollen grain with two male gametes
$(c)$ Seed inside the fruit
$(d)$ Embryo sac inside the ovule
Definations / Explanation :
$1.$ Nutritive layer
$2.$ Funicle
If stem has $2 n=10$ number of chromosomes than find out
$A$ - number of chromosomes in endosperm
$B$ - number of chromosomes in egg cell
$C$ - number of chromosomes in polar nuclei