Refer to the given figure and select the correct option regarding it.
AThis technique improves the quality of ground water by diluting the dissolved salts and other substances found in the ground water.
BThe technique helps to store water which can directly be used for gardens or for some cleaning purposes.
CThe technique is best functional in summer months only.
DBoth A and B
Refer to the given dichotomous key.
AClothes made purely of P do not wrinkle easily and also cannot absorb sweat.
BQ can be best suited for summer clothing as it absorbs sweat and breathes well.
CR can be obtained by retting of jute stems and is used for making carpets, ropes, etc.
DT was first developed in Africa whereas India is the leading producer of S.
answer is D
Match column I with column II and select the correct
option from the given codes. (There can be more than
one match for column I.)
A a – (v), b – (ii), (vi), c – (i), (iii), (iv)
B a – (vi), b – (i), (iv), c – (ii), (iii), (v)
C a – (iii), b – (ii), (v), c – (i), (iv), (vi)
D a – (ii), b – (i), (vi), c – (iii), (iv), (v)
X is a wind pollinated plant whereas Y is an insect pollinated plant.
Which of the following cites the correct difference between plants X and Y?
APlant X has sticky small and compact stigmas while plant Y has long, exposed and feathery stigmas.
BPlant X bears small inconspicuous flowers in dense clusters near the ends of the branches, while flowers of plant Y are big, brightly coloured and scented.
CFlowers of plant X produce nectar and have big petals whereas nectar and odour are absent in flowers of plant Y.
DPlant X is always self pollinated while plant Y shows cross pollination.
Ananya took a green leaf and then boil it in water. After boiling, she put it in alcohol
in a water bath. After some time, she performed iodine test on the leaf. The leaf turns
blue black. This shows that
A Chlorophyll is needed for photosynthesis.
B Sunlight is needed for photosynthesis.
C Starch is produced in green leaf during photosynthesis.
D Light is needed for photosynthesis.
The processes in the life cycle of a flowering plant are given here in random order.
|a → Seeds develop||b → Flowers bloom|
|c → Seeds germinate||d → Flowers get pollinated|
|e → New plant grows||f → Seeds disperse|
Select the option that arranges these processes in correct order.
Ae → c → b → d → a → f
Bc → e → b → d → a → f
Ce → c → d → b → a → f
Dc → e → d → b → f → a