Diversity in Living Organisms MCQ
1. Find out incorrect sentence
(a) Protista includes unicellular eukaryotic organisms
(b) Whittaker considered cell structure, mode and source of nutrition for classifying the organisms in five kingdoms
(c) Both Monera and Protista may be autotrophic and heterotrophic
(d) Monerans have well defined nucleus
Ans. (d) Monerans have well defined nucleus
Explanation: Monerans are prokaryotes, i.e., they do not have well defined nucleus.
2. Which among the following has specialised tissue for conduction of water?
(i) Thallophyta
(ii) Bryophyta
(iii) Pteridophyta
(iv) Gymnosperms
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (i) and (iv)
Ans. (c) (iii) and (iv)
Explanation: Specialised conductive tissues are not found in thallophyta and bryophyte. They first appear in pteridophyta.
3. Which among the following produce seeds?
(a) Thallophyta
(b) Bryophyta
(c) Pteridophyta
(d) Gymnosperms
Ans. (d) Gymnosperms
Explanation: Gymnosperms and angiosperms are seed bearing plants, but plants of lower groups do not bear seeds.
4. Which one is a true fish?
(a) Jellyfish
(b) Starfish
(c) Dogfish
(d) Silverfish
Ans. (c) Dogfish
Explanation: Dogfish is cartilaginous fish. Jellyfish is a coelenterate, starfish belongs to Echinodermata and silverfish is an insect.
5. Which among the following is exclusively marine?
(a) Porifera
(b) Echinodermata
(c) Mollusca
(d) Pisces
Ans. (b) Echinodermata
Explanation: Porifera, Mollusca and pisces are found in freshwater also.
6. Which among the following have open circulatory system?
(i) Arthropoda
(ii) Mollusca
(iii) Annelida
(iv) Coelenterata
(a) (i) and (ii)
(b) (iii) and (iv)
(c) (i) and (iii)
(d) (ii) and (iv)
Ans. (a) (i) and (ii)
7. In which group of animals, coelom is filled with blood?
(a) Arthropoda
(b) Annelida
(c) Nematoda
(d) Echinodermata
Ans. (a) Arthropoda
Explanation: Blood is not present in other groups in the options.
8. Elephantiasis is caused by
(a) Wuchereria
(b) Pinworm
(c) Planarians
(d) Liver flukes
Ans. (a) Wuchereria
9. Which one is the most striking or (common) character of the vertebrates?
(a) Presence of notochord
(b) Presence of triploblastic condition
(c) Presence of gill pouches
(d) Presence of coelom
Ans. (a) Presence of notochord
Explanation: Triploblastic condition, gill pouches and coelom are present in many nonvertebrates
as well.
10. Which among the following have scales?
(i) Amphibians
(ii) Pisces
(iii) Reptiles
(iv) Mammals
(a) (i) and (iii)
(b) (iii) and (iv)
(c) (ii) and (iii)
(d) (i) and (ii)
Ans. (c) (ii) and (iii)
Explanation: Amphibians and mammals do not have scales on their body.
11. Find out the false statement
(a) Aves are warm blooded, egg laying and have four chambered heart
(b) Aves have feather covered body, fore limbs are modified as wing and breathe through lungs
(c) Most of the mammals are viviparous
(d) Fishes, amphibians and reptiles are oviparous
Ans. (d) Fishes, amphibians and reptiles are oviparous
Explanation: Some fishes and reptiles are viviparous. Amphibians show external fertilization and hence cannot be kept under either oviparous or viviparous animals.
12. Pteridophyta do not have
(a) root
(b) stem
(c) flowers
(d) leaves
Ans. (c) flowers
Explanation: Flower are present only in angiosperms.
13. Identify a member of porifera
(a) Spongilla
(b) Euglena
(c) Penicillium
(d) Hydra
Ans. (a) Spongilla
Explanation: Euglena belongs to protozoa, Penicillium belongs to fungi and Hydra belongs to coelenterata.
14. Which is not an aquatic animal?
(a) Hydra
(b) Jelly fish
(c) Corals
(d) Filaria
Ans. (d) Filaria
Explanation: Filaria is a disease which happens because of Wuchereria.
15. Amphibians do not have the following
(a) Three chambered heart
(b) Gills or lungs
(c) Scales
(d) Mucus glands
Ans. (c) Scales
Explanation: Three chambered heart is found in amphibians. Lungs are present in adults and gills are present in tadpoles. Mucus gland is present on skin of amphibians.
16. Organisms without nucleus and cell organelles belong to
(i) fungi
(ii) protista
(iii) Cyanobacteria
(iv) archaebacteria
(a) (i) and (ii)
(b) (iii) and (iv)
(c) (i) and (iv)
(d) (ii) and (iii)
Ans. (b) (iii) and (iv)
Explanation: Prokaryotes belong to monera and cyanobacteria and archaebacteria belong to monera.
