Plasmogamy is fusion of - Vidyadip

MCQ

Plasmogamy is fusion of

A
Two haploid cells including their nuclei
✓
Two haploid cells without nuclear fusion
C
Sperm and egg
D
Sperm and two polar nuclei

✓

Answer

Correct option: B.

Two haploid cells without nuclear fusion

b
(b) It is the first stage of sexual reproduction in which the cytoplasm of two sex cells fuse with each other.

The nuclei of sex cells come close to each other but do not fuse.

Thus the resulting cell becomes binucleate or dikaryon.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from STD 11 - 2. Biology classification→STD 11 - 2. Biology classification — all question types→BIOLOGY STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Coconut fruit is a

Carbon dioxide is transported from tissues to respiratory surface by only:

The component of fungus is called :

During muscular contraction, the

The gelatinous membrane covering the sensorys hair cells of the ear is known as:

In which one of the following sets of animals do all the four give birth to young ones?

Match the following group of organisms with their respective distinctive characteristics and select the correct option:

Organisms	Characteristics
($a$) Platyhelminthes	($i$) Cylindrical body with no segmentation
($b$) Echinoderms	($ii$) Warm blooded animals with direct development
($c$) Hemichordates	($iii$) Bilateral symmetry with incomplete digestive system
($d$) Aves	($iv$) Radial symmetry with indirect development

In cockroach, excretion is brought about by-

$A$. Phallic gland $B$. Urecose gland $C$. Nephrocytes $D$. Fat body $E$. Collaterial glands

Choose the correct answer from the options given below :

In Earthworm, neurons are

Which one of these animals is not a homeotherm?