Match column I with column II and select the correct option from the given codes.
Aa – (i, v), b – (ii, iii), c – (iv, vi)
B a – (ii, vi), b – (i, iv), c – (iii, v)
C a – (ii, v), b – (iii, vi), c – (i, iv)
D a – (iii, iv), b – (i, ii), c – (v, vi)
B IS CORRECT
When a person breathes in, what happens to the diaphragm and to the rib cage?
|A||Becomes flatten||Moves downwards and inwards|
|B||Becomes flatten||flatten Moves outwards and upwards|
|C||Becomes more curved||Moves downwards and inwards|
|D||Becomes more curved||Moves outwards curved and upwards|
Mark the incorrect statement.
A Melting of wax is a physical change while burning of wax in a candle is a chemical change.
B Metals expand on heating while contract on cooling. Both are physical changes.
C Composition of matter changes during a chemical change while it remains same during a physical change.
D High and low tides in sea are the examples of non-periodic changes while growth of a tree is a periodic change.
Pulmonary _______ carries _______ rich blood from the heart to the lungs and pulmonary _______ carries _______ rich blood from the lungs to the heart.
Select the option that correctly fills up the blank spaces in the above passage.
A Vein, Carbon dioxide, Artery, Oxygen
B Vein, Oxygen, Artery, Carbon dioxide
C Artery, Carbon dioxide, Vein, Oxygen
D Artery, Oxygen, Vein, Carbon dioxide
Select the incorrect match.
(i) Ammonotelism- Sponges, Hydra, Cartilaginous fish, Leech, Crocodile
(ii) Ureotelism- Frogs, Toads, Bony fish, Turtles, Man
(iii) Uricotelism- Cockroach, Pigeon, Beetle, Lizard, Snake
A (i) and (ii) only
B (ii) and (iii) only
C (iii) only
D (i), (ii) and (iii)
Farheen soaked some bean seeds in water overnight. Next morning she drained the water and kept the seeds moist till they started germinating. She boiled half of the seeds and then kept the germinating seeds in one thermos flask (X) and the boiled seeds in another thermos flask (Y). She covered the mouths of both flasks with moist cotton wool. Then she inserted thermometers in both flasks and kept the flasks as shown in the figure.
What would be her observation?
A Temperature of flask X increases because it has photosynthesising seeds.
B Temperature of flask X increases because it has respiring seeds.
C Temperature of flask Y increases because it has boiled seeds.
D Both (B) and (C)