Fill in the Blanks Science Class 10 Chapter 8: How Do Organisms Reproduce

Read the following statements and write your answer as true of false.:

Question.1.
Pollen grains are transferred from stamens to ___________ of carpel.

Stigma

Question.2.
An egg cell of a plant is contained in an ___________ present in an ovary.

Ovule

Question.3.
Transfer of pollen from one flower to stigma of another flower of same species is termed ____________.

Cross-pollination

Question.4.
Testes are located outside the abdominal cavity in ____________.

Scrotum

Question.5.
Ovaries are also responsible for the production of hormone called ___________.

Estrogen/Progesterone

Question.6.
Plants raised by vegetative propagation bear early __________ and __________.

Flowers, Fruits

Question.7.
Future shoot hidden in a seed is called ___________.

Plumule

Question.8.
The gametes are formed in most of the multicellular organisms by a process of cell division called _________.

Meiosis

Question.9.
The two parts tied together during grafting are called _________ and __________.

Stock, Scion

Question.10.
If the __________ in the male is blocked, sperms can be prevented to _________ the egg.

Vas deferens, fertilize

Question.11.
A bud in Hydra develops an outgrowth to repeated division at a ___________.

Specific site

Question.12.
Simply break up into smaller pieces upon maturation is found in ___________.

Spirogyra

Question.13.
During the birth process, the pituitary hormone ___________ signals the uterus to contract.

Oxytocin

Question.14.
___________ bearing anthers which produce __________, are the male reproductive parts of a flower.

Stamen, pollen grains

Question.15.
The process of release of eggs from ovary is called ___________.

Ovulation

Question.16.
In many in vertebrate organisms, both sexes are found in the same individual. This is called _________.

Hermaphroditism

Question.17.
The development of the ________ egg and _________ fertilization freed the animals from the aquatic environment for reproduction and development.

Land, Internal

Question.18.
Cross pollination brings about __________ recombination in new plants.

Genetic

Question.19.
A technique to produce generically alike individuals from a single cell is known as __________.

Cloning

Question.20.
The process of asexual reproduction in Amoeba is __________.

Binary fission

Question.21.
____________ help in survival of the species in changing environment.

Variations

Question.22.
__________ is common method of multiplication of Yeast and Hydra.

Budding

Question.23.
Budding is a common method of asexual reproduction in yeast and ____________.

Hydra

Question.24.
In ___________ vegetative propagation occurs by leaves.

Bryophyllum

Question.25.
By the fusion of male and female gametes, _____________ is formed.

Zygote

Question.26.
Eggs are produced in ___________.

Ovary

Question.27.
___________ bearing ovary with ________, are the female reproductive parts of a flower.

Carpel, ovules

Question.28.
Release of egg from ovary is called as ____________.

Ovulation

Question.29.
Surgically when fallopian tube is removed or ligated, it is called ____________.

Tubectomy

Question.30.
Ovulation in female human beings stops after the age of ____________.

45-50

Question.31.
___________ flowers are underground closed flowers.

Cleistogamous

Question.32.
Organisms such as __________ can regenerate if they are broken into pieces.

Hydra

Question.33.
____________ is the periodic discharge of blood, mucous, uterine mucosa pieces, etc. from uterus.

Mensturation

Question.34.
Fertilization occurs in the ___________ tube.

Fallopian

Question.35.
Pollen grains are produced by ____________.

Stamens

Question.36.
___________ contain half the amount of DNA compared to the parents.

Germ cells

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