Home
Class 12
BIOLOGY
When the pollen grain is mature it conta...

When the pollen grain is mature it contains two cells, the vegetative cell and generative cell. The vegetative cell
a. Is bigger
b. Spindle shaped
c. Has abundant food reserve
d. Has large irregularly shaped nucleus.

A

a, b and c

B

a, c and d

C

a, b, c and d

D

b, c and d

Text Solution

Verified by Experts

The correct Answer is:
B
When the pollen grain is mature it contains two cells, the vegetative cell and generate cell. The vegetative cell is bigger, has abundant food reserve and has large irregularly shaped nucleus.
Promotional Banner

Similar Questions

Explore conceptually related problems

Mature pollen grain has a vegitative cell and a generative cell. Write the peculiarities of the two cells.

In plants that shed pollen grain at two-celled condition, the generative cell divides and form the two male gametes during the

Diatoms are unusual in that their vegetative cells are typically a. haploid b. diploid c. both a and b d. none of these

Read the following statements and find out the incorrect statements. a. Each testicular lobule contains one to three highly coiled seminiferous tubules in which sperm are produced b. Each seminiferous tubule is lined on its inside by two types of cells called Leydig cells and Sertoli cells. c. The region outside the seminiferous tubules called interstitial space, contain small blood vessels and male germ cells (spermatogonia) which lead to sperm formation. d. In testis immunologically component cells are also present. e. The seminiferous tubules of the testis open into the rete testis through vasa efferentia.

Read the following statements carefully and select the appropriate option given below. (i) It is possible to store pollen grains of a large number of species for years in liquid nitrogen (-196^(@)) . (ii) Cells of the nucellus have abundant reserve food materials. (iii) In a normal flower which opens and exposes the anthers and the stigma, complete autogamy is common. (iv) If both male and female flowers are present on the same plant, it prevents both autogamy and geitonogamy. (v) Cultivation of hybrids has tremendously increased productivity.

Which of the following is not a type of energy source? (a)Generator (b)Solar cell (c)Rheostat (d)Battery

Read the following statements and find out the incorrect statements. a. Asexual reproduction is common among single celled organisms, and in plants and animals with relatively complex organisations. b. In yeast, the division is unequal and small buds are produced that remain attached initially to the parent cell which eventually gets separated and mature into new yeast organism (cells). c. Vegetative reproduction is also a type of asexual reproduction. d. While in animals and other simple organisms the term vegetative reproduction is used unambiguously, in plants, the term asexual reproduction is frequently used. e. Water hyacinth is also called 'Terror of Bengal.'