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Practice each question, then open the answer or worked solution.
Find out the false statement
Answer is (d) Fishes, amphibians and reptiles are oviparous
Explanation:
Some fishes are viviparous, but Amphibians show external fertilization they can neither be kept under oviparous nor be viviparous hence statement (d) is wrong.
Pteridophyta do not have
Answer is (c) flowers
Identify a member of Porifera
Answer is (a) Spongilla
Explanation:
Euglena is a protozoan.
Penicillium is a fungus
Hydra is a Coelenterata
Which is not an aquatic animal?
Answer is (d) Filaria
Explanation:
Filaria is a disease caused by Wuchereria. It is spread by Mosquitos.
Amphibians do not have the following
Answer is (c) Scales
Explanation:
Amphibians have 3 chambered hearts. Lungs are present in Adults, and Gills are present in tadpoles. Mucous glands are present on the skin of Amphibians.
Organisms without nucleus and cell organelles belong to
(a) (i) and (ii)
(b) (iii) and (iv)
(c) (i) and (iv)
(d) (ii) and (iii)
Answer is (b) (iii) and (iv)
Explanation:
Cyanobacteria and archaebacteria are prokaryotes, and they do not have well-defined nuclei and cell organelles.
Fungi and Protista are Eukaryotes which possess Cell organelles and nuclei.
Which of the following is not a criterion for the classification of living organisms?
Answer is (d) Height of the plant
Explanation:
The height of a plant is an attribute which is related to bushes and trees, which are part of Kingdom Plantae hence the height of the trees cannot be a criterion for the classification of living organisms.
The feature that is not a characteristic of protochordata
Joined legs are a characteristic feature of Arthropods hence the answer is C)
Protochordata is triploblastic with a bilaterally symmetric body and coelom. They show notochord at some stage of life, and they are marine living.
The locomotory organs of Echinodermata are
Answer is (a) tube feet
Tube feet in Echinodermata help in locomotion and respiration
Corals are
Answer is (d) Cnidarians that live in colonies