Reproduction In Organism

Question 1

Life span?

Answer 1

Each and every organism can live only for a certain period of time. The period from birth to natural death of an organism.

Question 2

Range of life spans?

Answer 2

As short as few days to as long as 1000s yrs. Btw these extremes is the life span of most organisms.

Question 3

Relation of life span and size.

Answer 3

Not necessarily correlated. Size of parrot and crow not very different yet life spans show wide difference. Crow 15 yrs and parrot 140 yrs. Similarly, mango tree has shorter life span compared to banyan tree.

Question 4

No individual is immortal.

Answer 4

Irrespective of the life span, death of every individual organism is a certainty. Except single celled organisms eg amoeba it is due to the fact that they divide and continue to live as their daughter cells.

Question 5

Process that ensures the continuity of living organisms for several 1000s of years?

Answer 5

Reproduction

Question 6

Reproduction?

Answer 6

A biological process in which organism gives rise to young ones(offspring) similar to itself. The offspring 1. Grow 2. Mature and 3. In turn produce new offspring. Thus, there is a cycle of 1. Birth 2. Growth 3. Death

Question 7

Reproduction enables

Answer 7

The continuity of the species, generation after generation.

Question 8

There is a large diversity in the biological world and each organism has evolved its own mechanism to _and _ offspring.

Answer 8

Multiply and produce

Question 9

What factors are responsible for how an organism reproduces?

Answer 9

1. Organisms habitat
2. It’s internal physiology
3. Several other factors
   Collectively responsible for how it reproduces.

Question 10

Process of reproduction is divided into 2 on the basis of?

Answer 10

Whether there is participation of one or 2 organisms in the reproduction.

Question 11

What is asexual reproduction?

Answer 11

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

Question 12

Sexual reproduction?

Answer 12

When 2 parents (opp sex) participate in the reproductive processes and also involve fusion of male and female gametes.

Question 13

Offsprings produced in ASR are not just identical to one another but are also?

Answer 13

Exact copies of their parents

Question 14

ASR offspring likely to be genetically identical or different?

Answer 14

Identical

Question 15

What is a clone?

Answer 15

Morphologically and genetically similar individuals.

Question 16

ASR is common among

Answer 16

1. Single celled organisms (Protists and monerans)

2. Plants and animals with relatively simple organisations.

Question 17

Cell division a mode of reproduction

Answer 17

In protists and monerans, the organisms or the parent cell divides by mitosis into two to give rise to new individuals.

Question 18

Cell division in unicellular organisms

1. Yeast
2. Amoeba

Answer 18

1. Budding

2. Binary fission

Question 19

Who does binary fission and how?

Answer 19

Many single celled organisms like Amoeba and paramecium. Here cell divides into 2 halves and each rapidly grows into an adult

Question 20

Budding, who does and what happens ?

Answer 20

Yeast does, the division is unequal and small buds are produced that remain attached initially to the parent cell which eventually gets separated and mature into new yeast organisms (cells).

Question 21

ASR structures 1. Chlamydomonas 2. Penicillium 3.hydra 4. Sponge

Answer 21

1. Zoospores
2. Conidia
3. Buds
4. Gemmules