If a potted plant is covered with a glass jar, water vapours appear on the wall of glass jar. Explain why?
Match the column (A) with the column (B)
(A) (B)
(a) Parenchyma (i) Thin walled, packing cells
(b) Photosynthesis (ii) Carbon fixation
(c) Aerenchyma (iii) Localized thickenings
(d) Collenchyma (iv) Buoyancy
(e) Permanent tissue (v) Sclerenchyma
Iqbal has to push a lighter box and Seema has to push a similar heavier
box on the same floor. Who will have to apply a larger force and why?
Match the column (A) with the column (B)
(A) (B)
(a) Fluid connective tissue (i) Subcutaneous layer
(b) Filling of space inside the organs (ii) Cartilage
(c) Striated muscle (iii) Skeletal muscle
(d) Adipose tissue (iv) Areolar tissue
(e) Surface of joints (v) Blood
(f) Stratified squamous epithelium (vi) Skin
You spill a bucket of soapy water on a marble floor accidently. Would it
make it easier or more difficult for you to walk on the floor? Why?
Suppose your writing desk is tilted a little. A book kept on it starts sliding
down. Show the direction of frictional force acting on it.
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