Science Class 7th

141. _____ flows through arteries, capillaries and veins

A) Blood

B) Water

C) Air

D) None of these

142. _____chamber of heart contain deoxygenated blood

A) Right

B) Left

C) None of these

143. _______ chamber of heart contain oxygenated blood.

A) Right

B) Left

C) None of these

144. Asexual reproduction in plants is a kind of reproduction in which only______ parent plant is involved

A) One

B) Two

C) Three

145. Asexual reproduction in plants is also known as ______

A) Vegetative reproduction

B) Non-vegetative reproduction

C) Both a & b

146. When the cut stems or branches of some plants are placed in the soil, they develop into __________.

A) New plant

B) New stem

C) New leave

147. __________ is a method in which cutting are grafted on other plants of same kind, to improve quality and quantity of yield

A) Grafting

B) Cutting

C) None of these

148. When the branches of some plants are buried in the soil they develop roots and finally a new plant is formed called ____

A) Layering

B) Cutting

C) Grafting

149. When the _______are grown, these eyes or buds develop into new plants.

A) Tubers

B) Runners

C) Both a & b

150. In _______ the sex cells are involved.

A) Sexual reproduction

B) Non-sexual reproduction

C) None of these

151. _____ is the reproductive part in the flowering plants consisting of sepals, petal, stamens and carpels.

A) Flower

B) Stem

C) Leaves

152. _______ are usually green and leaf-like structures that protect the inner parts of the flower.

A) Sepals

B) Petals

C) Stamens

153. ___________ are often brightly coloured and leaf-like parts.

A) Sepals

B) Petals

C) Stamens

154. ______ are the male reproductive organs

A) Sepals

B) Petals

C) Stamens

155. __________ is the female reproductive organ.

A) Sepals

B) Petals

C) Stamens

D) Carpel

156. _____has three parts, the ovary, style and stigma

A) Carpel

B) Sepals

C) Petals

D) Stamens

157. In ___________ the gametes of the male and female parent fuse together to form a zygote

A) Sexual reproduction

B) Asexual reproduction

C) None of these

158. In asexual reproduction there is _____ in number through the reproductive process.

A) Rapid increase

B) Slower increase

C) None of these

159. In sexual reproduction there is _______ in number through the reproductive process

A) Rapid increase

B) Slower increase

C) None of these

160. In asexual reproduction all offspring are_______

A) Identical

B) Variation

C) None of these