Which of these differences between insect-pollinated flowers and wind-pollinated flowers is incorrect?
Raman took four similar pots (with a hole at the base) each with equal amount of different type of soil. He then placed these four pots on four similar dishes and poured water slowly on each soil sample. He used a stopwatch to measure the time taken by water to reach the level, he had marked at the same height in each dish.
The results obtained by him were tabulated in the table shown here.
Which soil is the most suitable for a plant that thrives in sandy soil ?
Amit, Rahul and Naveen were given three glass slides I, II and III respectively and a white paper with a cross mark (×). Amit painted his glass slide with a light blue colour. Rahul painted his glass slide with a black paint and Naveen left his slide as it is. They put each of these slides over the mark.
Which of the following statements is correct?
AScales in frogs help them to move easily through water.
BThe eyes on the sides of the head of a lion allow it to have a correct idea about the location of its prey.
CLeaves of submerged aquatic plants are usually narrow and do not possess stomata.
DIn desert plants, roots are poorly developed and are of secondary importance.
answer is c
The table given below shows the amount of water used by four different families in January, February, March and April. All four families watched a 'Water Conservation (Save Water) Programme' in March. Which family is likely to have understood the objective of conservation of water?
Which among these animals are more closely related than the others?
Aa and d
Bb and c
Cc and d
Da and b
Which of the following statements are correct about planet Venus?
(i) It rotates from west to east while the Earth rotates from east to west.
(ii) It shows phases just like the Moon.
(iii) It appears in the eastern sky before sunrise and in the western sky just after sunset.
(iv) It has no satellite of its own.
(v) It is the second brightest star in the night sky.
A(i) and (iii) only
B(i), (iii) and (v) only
C(ii), (iii) and (iv) only
D(i), (ii), (iii), (iv) and (v)
Ravi set up an experiment as shown below.
Which of the following holds true regarding set ups P and Q?
AIn set up P, the solution inside Visking tubing will become blue black at step II as all the starch is converted to simple sugars.
BIn set up Q, the solution inside Visking tubing will become blue black at step II as starch is not digested at all.
CIn set up P, the solution inside Visking tubing will become blue black at step II as starch is not digested by boiled amylase.
DIn set up Q, the solution inside Visking tubing will become blue black at step II as all the starch is converted to simple sugars by amylase.