Question

Pliz answer my question,start from Qno:15​

Answer 1

15 -differences between gymnosperms and angiosperms:

• In gymnosperms ovules are exposed but in angiosperm ovules are enclosed in ovary.
• In angiosperm seeds are enclosed inside the fruits but in gymnosperm seeds are not enclosed inside the fruits.
• Gymnosperm bear cones instead of flowers but angiosperm bear well developed flowers.

16-

1. They have mammary glands.
2. Their body is covered with hai.
3. Breathing takes place through lungs.

17- Uniform acceleration is a change of equal velocity in equal interval of tine.

Non- Uniform acceleration is a change of unequal velocity in equal interval of time.

18- Three equation of motion:

1. v =u+at
2. s=ut+1/2at^2
3. v^2 = u^2+ 2as

Hope this helps!!!