11)

In a potato, vegetative propagation takes place by:

Class 10 Biology

A)

leaf

B)

stem  tuber

C)

root

D)

grafting

12)

Vegetatively propagated plants

Class 10 Biology

A)

do not bear roots

B)

do not bear buds

C)

are genetically similar

D)

are genetically dissimilar

13)

Spirogyra reproduce by

Class 10 Biology

A)

budding

B)

fragmentation

C)

regeneration

D)

fission

14)

In Rhizopus, tubular thread like structures bearing sporangia at their tips are called

Class 10 Biology

A)

filaments

B)

hyphae

C)

rhizoids

D)

roots

15)

Plants like banana, rose, jasmine, orange have lost the capacity to produce

Class 10 Biology

A)

buds

B)

flower

C)

roots

D)

seeds

16)

The flower of the Hibiscus plant is

Class 10 Biology

A)

bisexual

B)

unisexual

C)

neuter

D)

very small

17)

The part of the flower which is present in the centre of the flower is

Class 10 Biology

A)

Sepals

B)

Petals

C)

Carpels

D)

Stamens

18)

The seed that contains the future plant is called the

Class 10 Biology

A)

cotyledons

B)

seed coat

C)

germ cells

D)

embryo

19)

The period of pregnancy is called

Class 10 Biology

A)

gestation period

B)

incubation period

C)

ovulation

D)

menstruation period

20)

The process of release of eggs from the ovary is called

Class 10 Biology

A)

menstruation

B)

reproduction

C)

insemination

D)

ovulation