How do Organisms Reproduce

Variation in offspring occurs mainly due to:

1. Identical DNA copying
2. Errors during DNA copying
3. Lack of reproduction
4. Absence of genes

Which method helps plants produce genetically identical copies?

1. Sexual reproduction
2. Vegetative propagation
3. Pollination
4. Fertilisation

Which organism reproduces through spore formation?

1. Rhizopus
2. Human
3. Dog
4. Mango plant

Which structure provides nourishment to the embryo in humans?

1. Placenta
2. Ovary
3. Sperm
4. Fallopian tube

The menstrual cycle in human females occurs approximately every:

1. 7 days
2. 14 days
3. 28 days
4. 60 days

Which of the following is an example of asexual reproduction?

1. Formation of seeds in plants
2. Production of offspring by fusion of gametes
3. Reproduction by budding in yeast
4. Reproduction in humans

Where does fertilisation occur in human females?

1. Uterus
2. Ovary
3. Fallopian tube
4. Vagina

Which hormone controls the development of secondary sexual characters in females?

1. Testosterone
2. Estrogen
3. Insulin
4. Thyroxine

Which organ produces sperm in human males?

1. Testis
2. Ovary
3. Uterus
4. Kidney

The process of fusion of male and female gametes is called:

1. Pollination
2. Fertilisation
3. Germination
4. Implantation

Which part of a flower produces male gametes?

1. Ovary
2. Stigma
3. Anther
4. Sepal

Which reproductive method is used by Hydra?

1. Binary fission
2. Budding
3. Fragmentation
4. Regeneration

Which method of reproduction is commonly seen in Amoeba?

1. Budding
2. Binary fission
3. Fragmentation
4. Spore formation

Which of the following is the basic unit of reproduction in multicellular organisms?

1. Cell
2. Tissue
3. Organ
4. Organ system