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
Which of the following statements is correct?
ADigestion of carbohydrates starts in stomach.
BHeart expands in size when air enters the body.
CCirculatory system transports blood from lungs to various parts of the body.
DKidneys, lungs and skin form the excretory system.
The cells shown in the figure can be found in the blood.
Which of the following statements is/are correct regarding these cells?
(i) They do not have nucleus.
(ii) They help the body to fight against infections.
(iii) They help the blood to clot.
(iv) They help to transport oxygen.
A (ii) only
B (i) and (ii) only
C (i), (ii) and (iii) only
D (i), (iii) and (iv) only