Classify Rohu, Scolidon, Flying lizard, King Kobra, Frog, Salamander,
Ostrich, Pigeon, Bat, Crocodile and Whale into the cold blooded/warm
blooded animals.
Classify the following based on number of chambers in their heart.
Rohu, Scoliodon, Frog, Salamander, Flying lizard, King Cobra,
Crocodile, Ostrich, Pigeon, Bat, Whale
Endoskeleton of fishes are made up of cartilage and bone; classify the
following fishes as cartilagenous or bony
Torpedo, Sting ray, Dog fish,
Rohu, Angler fish, Exocoetus
Fill in the blanks in the following.
(a) A person 1 m in front of a plane mirror seems to be _______________ m
away from his image.
(b) If you touch your ____________ ear with right hand in front of a plane
mirror it will be seen in the mirror that your right ear is touched with
____________.
(c) The size of the pupil becomes ____________ when you see in dim light.
(d) Night birds have ____________ cones than rods in their eyes.
Match items of column (A) with items of column (B)
(A) (B)
(a) Naked seed (A) Angiosperms
(b) Covered seed (B) Gymnosperms
(c) Flagella (C) Bryophytes
(d) Marchantia (D) Euglena
(e) Marsilea (E) Thallophyta
(f) Cladophora (F) Pteridophyta
(g) Penicillium (G) Fungi
Describe an activity to show that the incident ray, the reflected ray and
the normal at the point of incidence lie in the same plane.
Mention against each of the following whether regular or diffused reflection
will take place when a beam of light strikes. Justify your answer in each
case.
(a) Polished wooden table (b) Chalk powder
(c) Cardboard surface (d) Marble floor with water
spread over it
(e) Mirror (f) Piece of paper
Match items of column (A) with items of column (B)
(A) (B)
(a) Naked seed (A) Angiosperms
(b) Covered seed (B) Gymnosperms
(c) Flagella (C) Bryophytes
(d) Marchantia (D) Euglena
(e) Marsilea (E) Thallophyta
(f) Cladophora (F) Pteridophyta
(g) Penicillium (G) Fungi
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