1. Reproduction In Organisms

Front 1

When offspring is produced by a single parent with or without involvement of gamete formation, the reproduction is

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Asexual

Front 2

Morphologically and genetically identical offsprings are also called

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Clone

Front 3

Among single celled organism and in plants and animals with relatively simple organisation this mode of reproduction is known as

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Asexual reproduction

Front 4

In _______ & _______the organism or parent divide by mitosis and give rise to new individuals

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Protists and monerans

Front 5

Name two organisms in which cell division itself is a mode of reproduction

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Protists and monerans

Front 6

Many single celled organisms reproduce by_______ where a cell divides into two halves and each rapidly grows into an adult

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Binary fission

Front 7

The phenomenon of cyst formation is termed as

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Encystation

Front 8

Under favourable conditions the encysted amoeba divides by

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Multiple fission

Front 9

Encysted amoeba produces many minute amoeba called

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Pseudopodiospores

Front 10

The cyst wall burst out and disposal liberated in the surrounding medium to grow up into many amoeba this phenomenon is known as

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Sporulation

Front 11

Members of kingdom fungi and simple plants as algae reproduce the special

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Asexual reproductive structures

Front 12

The most common special asexual reproductive structures are

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Zoospores

Front 13

_____ are usually a microscopic and motile structure

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Zoospores

Front 14

Name any three common asexual reproductive structures

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Conidia, buds, gemmules

Front 15

Units of ______ such as runner,rizome,sucker,tuber,offset,bulb are also capable of giving rise to offspring

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Vegetative propagation

Front 16

In some organisms if body breaks into distinct pieces/fragments, each fragment grow into adult capable of producing offspring. This called

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Fragmentation

Front 17

Name the quiet a plant which is also known as Bengal of

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Water hyacinth

Front 18

Adventitious buds arise from notches present at leaves of margin of

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Bryophyllum

Front 19

In animals the _____ phase is followed by morphological and physiological changes prior to active reproductive behaviour

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Juvenile phase

Front 20

The juvenile phase is also known as

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Vegetative phase

Front 21

Which category of plant live for more than two years

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Perennial species

Front 22

Name the plant which flowers once in 12 years

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Strobilanthus kunthiana (neelakurinji)

Front 23

Non primate mammals cow,sheep, rats,deer,dogs,tiger etc cyclical changes during reproduction are called

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Oestrous cycle

Front 24

Cyclical changes in primates like monkey, apes and humans are called

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Menstrual cycle

Front 25

In sexual reproduction fusion of gametes is termed as

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Fertilization

Front 26

The events like fusion of gametes, formation of gametes and embryogenesis are characteristics of

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Sexual reproduction

Front 27

3 stages of sexual reproduction are

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Pre fertilization, fertilization and post fertilization

Front 28

What refers to the process of formation of two types of gametes

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Gametogenesis

Front 29

When both gametes are similar in appearance and cannot be distinguished

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Homogametes(isogametes)

Front 30

Morphologically distinct gametes are called

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Heterogametes

Front 31

Male gametes are also called

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Antherozoid or sperm

Front 32

Female gametee is also called the

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Egg or ovum

Front 33

Fertilization of plants and some invertebrate animals by their own sperm rather than that of another individual is known as

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Self fertilization

Front 34

______ refers to having both male and female reproductive structures in the same plant

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Homothallic

Front 35

Bisexual condition in several plants is denoted by

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Monoecious

Front 36

The term used to describe unisexual condition plants

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Heterothallic

Front 37

Term used for unisexual male flower

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Staminate

Front 38

Term used for unisexuality in plants

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Dioecious

Front 39

Bisexual animals that possess both male and female reproductive organs are called

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Hermaphrodites

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Species which produce two types of gametes

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Heterogametic species

Front 41

The plant body of several organisms belonging to Monera,fungi,algae and bryophytes is

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Haploid

Front 42

Reduction division has to occur in which type of body to produce haploid gametes

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Diploid

Front 43

In diploid organism specialised cells that undergo meiosis k/a

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Meiocytes

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At the end of the meiosis only____(1)____ gets incorporated into each___(2)___

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1) meiocytes

2) gamete

Front 45

What results in formation of diploid zygote

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Syngamy

Front 46

A natural form of asexual reproduction in which growth and development of embryo occurs without fertilization

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Parthenogenesis

Front 47

Process of development of embryo from zygote is known as

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Embryogenesis

Front 48

During embryogenesis zygote undergoes ______ & _______

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Cell division and cell differentiation

Front 49

In oviparous animals like reptiles and birds, the fertilized eggs are covered by hard______

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Calcareous shells

Front 50

The ovary develops into fruit which develops a thick protective wall called

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Pericarp