reproduction

Question 1

what is reproduction

Answer 1

reproduction is a biological process in which an organism reproduce a new individual of same kind

Question 2

advantages of reproduction

Answer 2

-evolution of species
-ensures the continutity of a species in earth
-creates genetic variations

Question 3

give an example of non-useful variation/evolution

Answer 3

moth

Question 4

what is a chromosome

Answer 4

a DNA molecule that consists a part of all gentic material of an organism

Question 5

types of asexual reproduction

Answer 5

8-fission
budding
fragementation
parthenogenesis
parthenocarpy
regeneration
sporogenesis/spore formation
vegetative propogation

Question 6

an example of binary fission

Answer 6

amoeba, paramecium, euglena

Question 7

an example of multiple fission

Answer 7

plasmodium

Question 8

what is budding and its example

Answer 8

formation of an individual from a small projection, a bud, arising from a perticular site of parent body ex- yeast

Question 9

what is fragmentation and its examples

Answer 9

an organism when matured divides its body into fragments/ sections that forms a new individual or organism
ex- spirogra, earthworm, liches

Question 10

by what asexual reproduction does planeria reproduce

Answer 10

fragmentation

Question 11

what is fragmentation

Answer 11

the ability of an organism to give rise to a new individual from their body parts

Question 12

what asexual reproduction takes place in rizobium

Answer 12

sporogenesis/spore formation

Question 13

what is sporogenesis

Answer 13

a type of asexual reproduction which involves of reproductive structures called spores

Question 14

what is the difference between parthenogenesis/ parthenocarpy

Answer 14

prathenogenesis- unfertilization of gaments/ unfertilized eggs forms a new individual and they are the copy of their mother, happens in both plants and animals

parthenocarpy- happens only in fruits, production of fruits without fertifization, artificial method, seedless fruits

Question 15

bryophyllum reproduce through

Answer 15

vegetative propgation from leaves

Question 16

FRO in plants /flowers

Answer 16

stigma,style ovary— pistil

Question 17

MRO in plants/flowers

Answer 17

anther,filament–stamen

Question 18

name the parts of seed

Answer 18

seed coat, cotyledon, embryoaxis–plumule/future shoot , radical/future shoot

Question 19

what is puberty

Answer 19

its the time period or stage of human development during which an individual show growth and becomes mature

Question 20

what is implantation

Answer 20

attachments of growing embryo to the layer/wall of ureter

Question 21

foetus gets its nutirents through

Answer 21

placenta

Question 22

which gland add fluid to the sperm cells

Answer 22

seminal vesical and prostate gland

Question 23

types of pollinations

Answer 23

self and cross pollination

Question 24

sperm cells and seminal and prostrate gland together forms

Answer 24

semen

Question 25

the age where mensuration freshly starts

Answer 25

menarch

Question 26

the age where mensuration stops

Answer 26

menopause

Question 27

STD fullform

Answer 27

sexually transmitted diseases

Question 28

name some STD

Answer 28

AIDS (accuired immunodefeciency syndrome) and warts

Question 29

what are contraceptions

Answer 29

methods or techniques to prevents pregnency

Question 30

full form of IUCD

Answer 30

intrauterine contraceptive devices

Question 31

types of contraception

Answer 31

machanical/barrier methods chemical methods surgecal methods IUCD