Question

QUESTION 36

 "Fish that reproduce in a system characterized by protandrous sequential hermaphroditism, will start off life as a reproducing as a _______ and then switch to reproducing as a _______ ".

male; female 

female; male 

male; male 

female; female 

QUESTION 37 

Which of the following is NOT a cutaneous appendage (formed from the epidermis)? 

fish scales 

reptile scales 

bird feathers 

mammal hairs

Answer 1

ANSWER 36 : The correct alternative is male; female.

REASON- Usually Protandry or Protandrous heramphrodite defines the mechanism in animals as well as plants, that develop as males but can later reproduce as females. However it has three different forms namely - (i) Protandrous sequential hermaphroditism , (ii) Protandrous hermaphroditism with overlap , (iii) Protandrous simultaneous hermaphroditism. Protandrous sequential hermaphroditism , they start off life and early reproduction is as a pure male and later reproduce as a pure female. Thus it produces both female gamete as well as male gamete in different point of life.

ANSWER 37: The correct alternative is fish scales.

REASON- Fish scale is a cutaneous appendage derived from the mesodermal layer of the dermis. However the reptile scale also comprises the cutaneous appendage and are developed from the epidermal layer, bird feathers are also a kind of cutaneous appendage and are considered epidermal growths, mammal hair that form the mammal's coat are kind of epidermal growth as well.