How do Organisms Reproduce (Term - II) X
How do Organisms Reproduce (Term-II)X
Questions
Budding in hydra and yeast occurs by
- longitudinal division of parent body into two
- transverse division of parent body into two
- formation of an outgrowth on the parent body
- formation of spores in the parent body
_________ is/are useful for the survival of species.
- Copying of DNA
- Variations
- Continuation
- Nutrition
The causal organism of gonorrhoea is a
- bacterium
- fungus
- virus
- worm
Binary fission occurs during
- favourable conditions
- unfavourable conditions
- hot conditions
- humid conditions
If hydra is cut into two parts, it does not die because
- it can form a bud
- it can regenerate into two complete organisms
- it can produce spores
- the two parts are new individuals
Which among the following plants has lost the capacity to produce seeds?
- Apple
- Pear
- Peach
- Banana
Bread mould reproduces by
- spore formation
- regeneration
- fission
- budding
Which life process is not essential for survival of individual life?
- Digestion
- Respiration
- Excretion
- Reproduction
Binary fission differs from multiple fission in respect of
- the number of individuals formed after fission
- the number of individuals involved
- the sexual form of reproduction
- better survival value to the organisms
Continuity of species is maintained by the process known as
- nutrition
- speciation
- reproduction
- variation
The mode of reproduction in Leishmania (the organism, which causes kala–azar in humans), is called
- binary fission
- multiple fission
- both (1) and (2)
- none of these
Where does fertilization take place in human beings?
- Uterus
- Fallopian tube
- Ovaries
- Vagina
_________ acts as a platform where the pollen lands.
- Anther
- Style
- Ovary
- Stigma
Which of the following characteristics does not appear in a girl during puberty?
- Hair growth in armpits
- Voice deepens
- Menstruation starts
- Breast size increases
Where does the development of embryo take place in humans?
- Seminal vesicles
- Uterus
- Oviduct
- Ovary
What carries the egg from ovary to the uterus?
- Vas deferens
- Epididymis
- Fallopian tube
- Vagina
After landing on the stigma, the pollen grain germinates to give rise to
- ovary
- embryo sac
- pollen tube
- zygote
Chemical method of preventing pregnancy is done by altering the _________ balance of the body.
- hormonal
- protein
- enzyme
- fat
What is the fate of ovule after fertilization?
- Seed
- Flower
- Fruit
- Ovary
The germ cells involved in sexual reproduction are called
- zygote
- gametes
- embryo
- ovaries
The food reserve of a seed is
- radicle
- cotyledon
- plumule
- seed coat
Which of the following is not a characteristic of sexual reproduction?
- It involves the formation of gametes.
- It leads to variations in the offspring.
- It produces identical copies of parents.
- It promotes diversity of characteristics in the offspring.
Surgical method of preventing fertilization in females involves tying-up of the
- ovary
- seminal vesicle
- uterus
- fallopian tube
The ratio of DNA content of gamete to that of parent body cell is
- 1 : 2
- 2 : 1
- 1 : 1
- 2 : 2
The fusion of sperm and egg initially results in formation of _________.
- zygote
- gametes
- embryo
- foetus
_________ provides the fluid to lubricate the ducts of male reproductive system.
- Testis
- Vas deferens
- Seminal vesicle
- Scrotum
Which of the following organs is not a part of male reproductive system in humans?
- Vagina
- Vas deferens
- Seminal vesicle
- Epididymis
Testis are placed in the scrotum so as to
- produce the male sex hormones
- provide proper nourishment for testis development
- provide a temperature 2 to 3oC lower than the body temperature
- provide a temperature 2 to 3oC higher than the body temperature
The causal organism of gonorrhoea is a
- bacterium
- fungus
- virus
- worm