Reproduction and Heredity

Which one of the following is not a part of female reproductive system?

  1. Cervix
  2. Vagina
  3. Urethra
  4. Fallopian tube

Which of the following statements about sexual reproduction in flowering plants are correct?

  1. Stamen is present in the centre of a flower.
  2. Stamen produces pollen grains in the ovary.
  3. The swollen bottom part of carpel is the ovary.
  4. The fusion of germ cells gives rise to zygote.

Select the correct answer using the code given below

  1. 2 and 4 only
  2. 1 and 3 only
  3. 2, 3 and 4 only
  4. 1, 2, 3 and 4

Golden rice is a genetically-modified crop plant where the incorporated gene is meant for biosynthesis of

  1. Omega-3 fatty acids
  2. Vitamin A
  3. Vitamin B
  4. Vitamin C

The theory of evolution of species by natural selection was given by

  1. Mendel
  2. Darwin
  3. Morgan
  4. Lamarck

In peas, a pure tall plant (TT) is crossed with a short plant (tt). The ratio of pure tall plants to short plants in F2 is

  1. 1 : 3
  2. 3 : 1
  3. 1 : 1
  4. 2 : 1

A trait in an organism is influenced by

  1. paternal DNA only
  2. maternal DNA only
  3. both maternal and paternal DNA
  4. neither by paternal nor by maternal DNA

A zygote which has an X-chromosome inherited from the father will develop into a

  1. boy
  2. girl
  3. X- chromosome does not determine the sex of a child
  4. either boy or girl

If a round, green seeded pea plant (RR yy) is crossed with wrinkled, yellow seeded pea plant, (rr YY) the seeds produced in F1 generation are

  1. round and yellow
  2. round and green
  3. wrinkled and green
  4. wrinkled and yellow

A cross between a tall plant (TT) and short pea plant (tt) resulted in progeny that were all tall plants because

  1. tallness is the dominant trait
  2. shortness is the dominant trait
  3. tallness is the recessive trait
  4. height of pea plant is not governed by gene ‘T’ or ‘t’

Two pink coloured flowers on crossing resulted in 1 red, 2 pink and 1 white flower progeny. The nature of the cross will be

  1. double fertilisation
  2. self pollination
  3. cross fertilisation
  4. no fertilisation

Which among the following diseases is not sexually transmitted?

  1. Syphillis
  2. Hepatitis
  3. HIV - AIDS
  4. Gonorrhoea

The correct sequence of organs in the male reproductive system for transport of sperms is

  1. testis → vasdeferens → urethra
  2. testis → ureter → urethra
  3. testis → urethra → ureter
  4. testis → vasdeferens → ureter

Length of pollen tube depends on the distance between

  1. pollen grain and upper surface of stigma
  2. pollen grain on upper surface of stigma and ovule
  3. pollen grain in anther and upper surface of stigma
  4. upper surface of stigma and lower part of style

Vegetative propagation refers to formation of new plants from

  1. stem, roots and flowers
  2. stem, roots and leaves
  3. stem, flowers and fruits
  4. stem, leaves and flowers

In Rhizopus, tubular thread-like structures bearing sporangia at their tips are called

  1. filaments
  2. hyphae
  3. rhizoids
  4. roots

In Spirogyra, asexual reproduction takes place by

  1. breaking up of filaments into smaller bits
  2. division of a cell into two cells
  3. division of a cell into many cells
  4. formation of young cells from older cells

Characters transmitted from parents to offspring are present in

  1. cytoplasm
  2. ribosome
  3. golgi bodies
  4. genes

Which of the following is the correct sequence of events of sexual reproduction in a flower?

  1. pollination, fertilisation, seedling, embryo
  2. seedling, embryo, fertilisation, pollination
  3. pollination, fertilisation, embryo, seedling
  4. embryo, seedling, pollination, fertilisation

In a flower, the parts that produce male and female gametes (germ cells) are

  1. stamen and anther
  2. filament and stigma
  3. anther and ovary
  4. stamen and style

Structures present in a cell which is responsible for determination of the sex of a baby is

  1. cytoplasm
  2. cell membrane
  3. nucleus
  4. chromosome

In human beings, the correct sequence of events during reproduction is

  1. gamete formation, fertilisation, zygote, embryo
  2. embryo, zygote, fertilisation, gamete formation
  3. fertilisation, gamete formation, embryo, zygote
  4. gamete formation, fertilisation, embryo, zygote

Aquatic animals in which fertilisation occurs in water are said to be:

  1. viviparous without fertilisation
  2. oviparous with external fertilisation
  3. viviparous with internal fertilisation
  4. oviparous with internal fertilisation

Reproduction by budding takes place in

  1. hydra
  2. amoeba
  3. paramecium
  4. bacteria

In humans, the development of fertilised egg takes place in the

  1. ovary
  2. testis
  3. oviduct
  4. uterus

Pollination refers to the

  1. transfer of pollen from anther to ovary
  2. transfer of male gametes from anther to stigma
  3. transfer of pollen from anther to stigma
  4. transfer of pollen from anther to ovule

The eye of the potato plant is what

  1. the root is to any plant
  2. the bud is to a flower
  3. the bud is to Bryophyllum leaf
  4. the anther is to stamen

Seeds of drumstick and maple are carried to long distances by wind because they possess

  1. winged seeds
  2. large and hairy seeds
  3. long and ridged fruits
  4. spiny seeds

Which of the following parts of a plant take part in sexual reproduction?

  1. Flower
  2. Seed
  3. Fruit
  4. Branch

Choose the correct answer from below.

  1. (i) and (ii)
  2. (i), (ii) and (iii)
  3. (iii) and (iv)
  4. (ii), (iii) and (iv)