Question

(b) What is the term given to such structures?
B. Short Answer Type Questions (2 marks each)
1. What do you mean by connecting link? Give at least two examples.
2. What do you mean by contrasting characters? Give a list of at least four​

Answer 1

Answer:

2

Explanation:

what do you mean by contrasting c

Answer 2

Answer:

1Connecting link is an organism having characteristics of two different group of organisms e.g, duck-billed platypus ( scientific name Ornithorhynchus anatinus) is a connecting link between reptiles and mammals i.e, it has mammary glands to feed its young ones like other mammals e.g human being, cow, buffalo etc., and it lays hard-shelled egg with a large amount of yolk like reptiles , so duck-billed platypus is a connecting link between two evolutionary groups viz., reptiles and mammals.

2 The pair of contrasting characters means a single character exhibit two opposite different character. For example if we considered height, the contrasting trait will be short and tall. Explanation: This concept of pair of contrasting traits exhibited by the pea plant was used by the Mendel to study genetics