Given below are a few statements related to external fertilisation.
I. The male and female gametes are formed and released simultaneously.
II. Only a few gametes are released into the medium.
III. Water is the medium in a majority of organisms exhibiting external fertilisation.
IV. Offspring formed as a result of external fertilisation have better chances of survival than those formed inside an organism.
Choose the correct statements.
III and IV
I and III
II and IV
I and IV
The statements given below describe certain features that are observed in the pistil of flowers.
I. Pistil may have many carpels.
II. Each carpel may have more than one ovule.
III Each carpel has only one ovule.
IV. Pistil have only one carpel.
Choose the statements that are true from the options below.
I and II
I and III
II and IV
III and IV
Which of the following situations correctly describe the similarity between an angiospermic egg and a human egg?
I. Eggs of both are formed only once in a lifetime.
II. Both the angiosperm egg and human egg are stationary.
III. Both the angiosperm egg and human egg are motile transported.
IV. Syngamy in both results in the formation of zygote.
Choose the correct answer from the options given below.
II and IV
only IV
III and IV
I and IV
Appearance of vegetative propagules from the nodes of plants such as sugarcane and ginger is mainly because
nodes are shorter than internodes
nodes have meristematic cells
nodes are located near the soil
nodes have non-photosynthetic cells
Which of the following statements, support the view that elaborate sexual reproductive process appeared much later in the organic evolution.
I. Lower groups of organisms have simpler body design.
II. Asexual reproduction is common in lower groups.
III. Asexual reproduction is common in higher groups of organisms.
IV. The high incidence of sexual reproduction in angiosperms and vertebrates.
Choose the correct answer from the options given below.
I and III
I and III
II and IV
II and III