Question

Echidna and platypus which lays eggs belongs to the class -
i) Mammalia
ii) Reptilia
iii) Aves

Earthworm possesses hearts -
i) 6 pairs
ii) 4 pairs
iii) 2 pairs

Adenine is -
i) Purine
ii) Pyrimidine
iii) Nucleotide​

Answer 1

Answer:

1. (i) Mammalia

2. (ii) Four pairs

3. (iii) Nucleotide