Reproduction in plants Worksheet-4

Reproduction in plants Worksheet-4

 

Multiple-Choice Questions:

  1. Pollen grains on the stigma of a flower reach the egg by forming a:

(a) Seed               (b) Carpel            (c) Cotyledon      (d) pollen tube

 

  1. In potato, vegetative propagation takes place by:

(a) Seeds              (b) Leaves            (c) Stem               (d) Root

 

  1. Bryophyllum plant reproduces vegetatively by:

(a) adventitious buds                      (b) leaf bud

(c) Root                                            (d) Stem

 

  1. In the process of grafting, the plant forming the shoot system is known as:

(a) Sucker            (b) scion              (c) Bulb                (d) Stock

 

  1. Pollen sacs are present in:

(a) Anther            (b) Ovary             (c) Corolla            (d) Thalamus

 

  1. The transfer of pollen grains from anther to the stigma of the same flower is:

(a) Ovulation                                   (b) Fertilization

(c) self pollination                           (d) cross pollination

 

  1. In some plants horizontal stems arise from the base of the erect shoot, grow horizontally in the soil, and then come out to form new aerial shoots.

\\server\Quiz on Home\Mahesh B\simran\Grade-7-REPRODUCTION IN PLANTS\Final JPG\6.jpg

Identify the plant from the characteristics discussed and the picture given above.

(a) Chrysanthemum                        (b) Oxalis

(c) Dahlia                                          (d) Vallisneria

 

Fill in the Blanks:

  1. The plants which have either male gametes or female gametes, are called _______ flowers.
  2. The transfer of the pollen grains to the stigma of the pistil is known as _____.
  3. The process in which the pollen tube reaches the ovule and the male gamete is released which fuse with the female gamete (eggs) present there is called ______.
  4. The process by which the embryo in the seed becomes active and begins to grow into a new plant is called _______.

 

True/False:

  1. Stamens have a stigma, style, and ovary.
  2. Sexual reproduction is carried out in both flowering and non-flowering plants.
  3. Wind-pollinated flowers are brightly coloured and have nectar.
  4. Stems and roots are the reproductive organs of a plant.
  5. Vegetatively, plants reproduce with the help of roots, bulbs, rhizomes, tubers, corms, and adventitious buds.

 

Answer key:

Multiple-Choice Questions:

  1. (D)
  2. (C)
  3. (A)
  4. (B)
  5. (A)
  6. (C)
  7. (A)

Fill in the blanks:

  1. Incomplete/unisexual
  2. Pollination
  3. Fertilization
  4. Germination

True/False:

  1. F
  2. F
  3. F
  4. F
  5. T