Which one of the following sets of animals belong to a single taxonomic group?
1. Cuttlefish, jellyfish, silverfish, dogfish, starfish
2. Bat, pigeon, butterfly
3. Monkey, chimpanzee, man
4. Silkworm, tapeworm, earthworm
Select the correct statement about class-Aves
1. They are warm blooded (homoiothermous) animals and are able to maintain a constant body temperature
2. Respiration occurs through lungs and air sacs connected to lungs for supplement respiration
3. They are oviparous with separate sexes, internal fertilisation and direct development
4. All of the above
The animals belonging to all the following groups are exclusively marine except:
1. Ctenophora
2. Porifera
3. Protochordata
4. Echinodermata
A land snail, a clam, and an octopus all share
1. a mantle
2. calcareous shell
3. a radula
4. distinct cephalization
Which of the following combinations of phylum and description is incorrect?
1. | Echinodermata–branch Bilateria, coelom from archenteron |
2. | Nematoda–roundworms, pseudocoelomate |
3. | Cnidaria–radial symmetry, polyp and medusa body forms |
4. | Porifera - gastrovascular cavity, mouth from blastopore |
Match Column - I with Column - II and choose the correct option
Column - I Column - II
a.A vector of disease (i) Bombyx
b.A gregarious pest (ii) Limulus
c.A living fossil (iii) Locusta
d.An economically (iv) Culex insect
important
1. a(iii), b(ii), c(i), d(iv)
2. a(i), b(ii), c(iii), d(iv)
3. a(ii), b(iv), c(iii), d(i)
4. a(iv), b(iii), c(ii), d(i)
Which of the following set of animals belong the phylum hemichordate?
1. Balanoglossus, Saccoglossus
2. Salpa, Doliolum
3. Petromyzon, Myxine
4. Dentalium, Chaetopleura
Similarity between protochordata and hemichordata is
1. Presence of notochord.
2. Exclusively marine.
3. Dorsal hollow and single central nervous system.
4. Exclusively parasitic.
Vertebrates and seastars may seen as different as two
animal groups can be, yet they share
1. The same type of body symmetry as adults.
2. A high degree of cephalization.
3. Certain developmental pattern, including the type
of coelom formation.
4. The presence of endoskeleton that include
cranium
All the following are present in sponges, except
1. Spicules
2. Choanocytes
3. A digestive tract
4. Sexual and / or asexual reproduction