Choose the correct pair.

(1) Coconut, cucurbits - dioecious

(2) Honeybee, Rotifers - Parthenogenesis

(3) Ornithorhyncus, Whale - viviparity

(4) Frog, Peacock - external fertilisation

Select the incorrect statement.

(1) Periplaneta has compound eyes.

(2) Earthworm shows segmentation.

(3) Ascaris shows sexual dimorphism

(4) Liver fluke has a complete alimentary canal

Which of the following waste products in grasshopper is not excreted and is used in other metabolic activities?

(1) Carbon dioxide

(2) Water

(3) Uric acid

(4) Faeces

Select the animal that exhibits retrogressive metamorphosis.

(1) Bufo

(2) Amphioxus

(3) Limulus

(4) Herdmania

Which one of the following is not a mammalian character?

(1) Presence of milk producing glands

(2) Skin is unique in possessing hair

(3) Presence of external ears called pinnae

(4) Homodont type of dentition

Retrogressive metamorphosis occurs in

(1) Hemichordata

(2) Cephalochordata

(3) Urochordata

(4) Vertebrata

Some salient features and phyla of organisms are given below. Select the option which shows the correct combination of organism, its phylum and salient features.

Select the correct statement regarding reproduction.

(1) Mating in dogs is synchronised with lunar cycle.

(2) Salamanders always have internal fertilisation.

(3) In Trygon, the male introduces sperms into female through a modified pelvic fin.

(4) Catla has internal fertilisation.

Select the option that correctly matches characteristic features with the group of three animals.

(1) Skeleton of spicules − Sycon, Adamsia, Spongilla

(2) Excretion by flame − Taenia, Fasciola, Ancylostoma

(3) Mouth contains radula −  Dentalium, Octopus, Ophiura

(4) Jointed appendages −  Limulus, Apis, Laccifer

Among which of the animals urinary bladder is absent?

(1) Frog

(2) Crow

(3) Ostrich

(4) Camel