In which type of parthenogenesis are only males produced?

(a)

Arrhenotoky

(b)

Thelytoky

(c)

Amphitoky

(d)

Both a and b

The mode of sexual reproduction in bacteria is by ______.

(a)

Formation of gametes

(b)

Endospore formation

(c)

Conjugation

(d)

Zoospore formation

Assertion and reasoning questions:
In each of the following questions there are two statements. One is assertion (A) and other is reasoning (R). Mark the correct answer as
Assertion: Viviparous animals give better protection to their off springs.
Reason: They lay their eggs in the safe places of the environment.
Codes:
A. If both A and R are true and R is correct explanation for A
B. If both A and R are true but R is not the correct explanation for A
C. If A is true but R is false
D. If both A and R are false.

(a)

If both A and R are true and R is correct explanation for A

(b)

If both A and R are true but R is not the correct explanation for A

(c)

If A is true but R is false

(d)

If both A and R are false

Multiple fission is seen in _______

(a)

Vorticella and ceratium

(b)

Plasmodium and paramecium

(c)

Amoeba and cyanobacteria

(d)

Vorticella and plasmodium

Plasmotomy is observed in ________

(a)

Giant Amoeba

(b)

Hydra

(c)

Plasmodium

(d)

Ceratium

Gemmules are ______

(a)

Exogenous growth

(b)

Daughter nuclei

(c)

Internal buds

(d)

Regenerated parts

Conjugation is a type of ______

(a)

Asexual reproduction

(b)

Autogamy

(c)

External fertilization

(d)

Sexual reproduction

Isogamy is observed in ______

(a)

Monocystis

(b)

Mammals

(c)

Trichonympha

(d)

Reptiles

Paedogenesis is seen in ______

(a)

Gall fly

(b)

Honey bees

(c)

Aphis

(d)

Hydra

This is a method of sexual reproduction in which individuals of the same species temporarily write and exchange certain. amount of nuclear material and then get separated.

(a)

Syngamy

(b)

Conjugation

(c)

Parthenogenesis

(d)

Paedogenesis