Reproduction Of Organism(Aakash)

Question 1

Life Span of elephant

Answer 1

60-90 yrs

Question 2

Life span of Rose

Answer 2

5-7 years

Question 3

Life span of dog

Answer 3

25-30 yrs

Question 4

Life span of butterflies

Answer 4

1-2 weeks

Question 5

Life span of banana tree

Answer 5

25 yrs

Question 6

Life span of cow

Answer 6

20-25 yrs

Question 7

Life span of crow

Answer 7

15 yrs

Question 8

Life span of parrot

Answer 8

140 yrs

Question 9

Life span of crocodile

Answer 9

60 yrs

Question 10

Life span of rice plant

Answer 10

3-4 months

Question 11

Life span of fruitfly

Answer 11

2 weeks

Question 12

Life span of Banyan Tree

Answer 12

200-300 yrs

Question 13

Life span of horse

Answer 13

60 yrs

Question 14

Life span of tortoise

Answer 14

100-150 yrs

Question 15

Binary fission

Answer 15

It occurs in many single cell organisms belonging to kingdom monera (bacteria) , and Protista (Amoeba and Paramecium)

Question 16

Simple Binary fission or irregular binary fission

Answer 16

Amoeba

Question 17

Longitudinal binary fission

Answer 17

Euglena

Question 18

Transverse binary fission

Answer 18

Bacteria
Paramecium
Diatoms

Question 19

Asexual reproduction in yeast

Answer 19

Budding

Question 20

Sporulation occurs in

Answer 20

Members of kingdom fungi(CONIDIA)

CONIDIA are non motile spores.

It is produced by special hyphal branches called conidiophores.

Simple plants such as algae(ZOOSPORES)…….

ZOOSPORES are motile spores.

Orgin of zoospore is endogenous because it’s formation occurs inside zoosporangia.

In unicellular green alga., chlamydomonas.. Zoospore is pyramid shape.

Question 21

Fragmentation

Answer 21

Some algae(spirogyra), fungi, hydra

Question 22

Buds

Answer 22

Bud is a compact immature shoot protected by immature leaves.

Question 23

Root promoting chemicals are

Answer 23

IBA (Indole-3-butyric acid)

NAA(Naphthalene acetic acid)

Question 24

Progenitor of next generation in seed is

Answer 24

Embryo

Question 25

The vital link that ensures continuityof species between organism of one generation and the next is

Answer 25

Zygote

Question 26

Fleshy buds in aquatic plant is known as

Answer 26

Turions

Question 27

A portion of underground stem bearing bud forms a new plant in

Answer 27

Narcissus Gladiolus Freesia

Question 28

Which plant produce non motile male gamete?

Answer 28

Mangifera | Pinus

Question 29

Morphallaxis

Answer 29

Form of regeneration It involves the reconstruction of whole body from a small fragment by reorganizing the existing cells. The regenerated organism is smaller than the original one. Ex. Amoeba However after the completion of process it grows and attains normal size after sometime. Eg, hydra

Question 30

Epimorphosis

Answer 30

It replaces a lost organ from the body by proliferating new cells from the surface of a wound or injured part. Regeneration of an appendage in an arthropod, arm of a star fish and tail in a lizard occur by the process of epimorphosis.

Question 31

What does each individual of clone referred to as

Answer 31

Ramets

Question 32

Simple binary fission

Answer 32

Amoeba

Question 33

Longitudinal binary fission

Answer 33

Euglena | Vorticella

Question 34

Oblique binary fission

Answer 34

Ceratium | Gonyaylax

Question 35

Transverse binary fission

Answer 35

``` Paramecium Diatoms Bacteria Planaria In paramecium, transverse binary fission is preceeded by amitotic division of macronucleus and mitotic division of micronucleus. ```

Question 36

Gametes are released in water and moved towards each other

Answer 36

Chemotactically

Question 37

Entry of pollen tube into the embryo sach is under___________guidance.

Answer 37

Chemotropic

Question 38

Types of parthenogenesis :- Arrhenotoky--bees, wasps and turkey(bird) Thelytoky--Lacerta saxicola armeniaca, Typhlina brahmina, Rotifers, Whiptail Amphytoky--Aphis(Aphid)

Answer 38

1-only males are produced 2-only females are produced 3-individual of any sex may develop

Question 39

Bisexual✌ | Earthworm, tapeworm, leech

Answer 39

Unisexual👍 | 🐜ants, wasps, 🐝bees, 🦟mosquitoes, 🦗cockroaches, 🐸frog, 🐰rabbits, 👩‍⚕humans

Question 40

Name the organisms which exibit regular annual alternation of sexes

Answer 40

American oyster

Question 41

Very important point!!!

Answer 41

Honeybee and Hydra have same number of chromosome in their gametes.

Question 42

very important point!!!

Answer 42

Ant queen and squirrel have almost similar maximum life span.

Question 43

largest animal

Answer 43

whale

Question 44

Eggs are covered with a tough,leathery, coat in case of

Answer 44

Lizards

Question 45

External syngamy occurs in case of

Answer 45

Bony fishes

Question 46

How many compartments of testicular lobules each testis has?

Answer 46

250 compartments

Question 47

Each lobule contain how many seminiferous tubule?

Answer 47

1-3

Question 48

Castration

Answer 48

Removal of testes

Question 49

Which testicular hormone is secreted by interstitial cell of leydig?

Answer 49

Androgens

Question 50

Semen

Answer 50

The average volume of semen in an ejaculation is 2.5-5 ml with ba sperm count of 200-300 million sperms. Out of these sperms, for normal fertility, at least 60% sperms must have normal shape and size and atleast 40% of them show vigorous motility.