MCQOPTIONS
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MCQOPTIONS
This section includes 2268 Mcqs, each offering curated multiple-choice questions to sharpen your Grade7 knowledge and support exam preparation. Choose a topic below to get started.
| 1151. |
The pollen grains of bird pollinated flowers |
| A. | stick to their feathers |
| B. | hang with the feathers |
| C. | penetrate in the feathers |
| D. | stick to the skin |
| Answer» B. hang with the feathers | |
| 1152. |
Mostly the color of sepal is |
| A. | yellow |
| B. | green |
| C. | orange |
| D. | red |
| Answer» C. orange | |
| 1153. |
Fertilization occurs |
| A. | after pollination |
| B. | before pollination |
| C. | with pollination |
| D. | without pollination |
| Answer» B. before pollination | |
| 1154. |
The part of a flower that protects flower in bud form is |
| A. | sepal |
| B. | petal |
| C. | carpel |
| D. | stamen |
| Answer» B. petal | |
| 1155. |
The miniature plants contain one or two seed leaves called |
| A. | radicle |
| B. | plumule |
| C. | cotyledon |
| D. | zygote |
| Answer» D. zygote | |
| 1156. |
Pollen grains of insects pollinated flowers are |
| A. | sticky and light weight |
| B. | light weight and in a huge quantity |
| C. | light weight and huge |
| D. | sticky and huge |
| Answer» E. | |
| 1157. |
A branch of plant that grows and bends downwards to the soil, with growing of small roots over the surface of soil which penetrates in the soil. This kind of asexual reproduction is known as |
| A. | tuber |
| B. | runner |
| C. | rooting branch |
| D. | bulb and corms |
| Answer» D. bulb and corms | |
| 1158. |
Essentials for germination of a seed are |
| A. | water, air and temperature |
| B. | water and air |
| C. | air and temperature |
| D. | air, humidity and pressure |
| Answer» B. water and air | |
| 1159. |
Until seed makes food itself, it is fed by two leaves known as |
| A. | radicle |
| B. | plumule |
| C. | stem |
| D. | cotyledon |
| Answer» E. | |
| 1160. |
The flow of seeds far away from their parent plants is known as |
| A. | dispersion |
| B. | pollination |
| C. | fertilization |
| D. | reproduction |
| Answer» B. pollination | |
| 1161. |
'Nectar' in the petals produces |
| A. | different smells |
| B. | bad smell |
| C. | fragrance |
| D. | attractive scents |
| Answer» E. | |
| 1162. |
Above the ovary, there is a narrow stalk which is called |
| A. | stigma |
| B. | style |
| C. | filament |
| D. | anther |
| Answer» C. filament | |
| 1163. |
The miniature root in the miniature plant is known as |
| A. | radicle |
| B. | plumule |
| C. | cotyledon |
| D. | zygote |
| Answer» B. plumule | |
| 1164. |
In asexual reproduction, baby plants are |
| A. | very different from their parent plants |
| B. | exactly same as parent plant |
| C. | 50% like parent plant |
| D. | 80% like parent plant |
| Answer» C. 50% like parent plant | |
| 1165. |
When a seed gets proper contents which it needs to grow into a plant, we call that the seed is ready to |
| A. | pollinate |
| B. | germinate |
| C. | reproduce |
| D. | fertilize |
| Answer» C. reproduce | |
| 1166. |
The female reproductive part of a flower is known as |
| A. | carpel |
| B. | stamen |
| C. | petal |
| D. | sepal |
| Answer» B. stamen | |
| 1167. |
The pollens from plants are mainly carried by two means, i.e |
| A. | insects and birds |
| B. | wind and birds |
| C. | insects and wind |
| D. | animals and insects |
| Answer» D. animals and insects | |
| 1168. |
Most of the plants reproduce through |
| A. | buds |
| B. | crafting |
| C. | seeds |
| D. | sperm |
| Answer» D. sperm | |
| 1169. |
The male reproductive part of a flower is known as |
| A. | carpel |
| B. | stamen |
| C. | petal |
| D. | sepal |
| Answer» C. petal | |
| 1170. |
The petals have 'nectar' in their |
| A. | bottom |
| B. | top |
| C. | base |
| D. | tip |
| Answer» D. tip | |
| 1171. |
When embryo starts to grow, the endosperm provides it with |
| A. | water |
| B. | oxygen |
| C. | carbon dioxide |
| D. | food |
| Answer» E. | |
| 1172. |
Mostly the colors of the flowers pollinated by birds are |
| A. | red, orange or yellow |
| B. | green, blue or purple |
| C. | pink, white or black |
| D. | red, purple or white |
| Answer» B. green, blue or purple | |
| 1173. |
When fruit is formed, the ovule turns into |
| A. | seeds |
| B. | fruit |
| C. | female sex cells |
| D. | male sex cells |
| Answer» B. fruit | |
| 1174. |
If a piece of onion is planted in a soil, it will turn into a plant with multiple onions under it, this asexual reproduction is called |
| A. | tuber |
| B. | runner |
| C. | rooting branch |
| D. | bulb and corms |
| Answer» E. | |
| 1175. |
Each ovule contains |
| A. | female sex cells |
| B. | male sex cells |
| C. | bisexual cells |
| D. | transsexual cells |
| Answer» B. male sex cells | |
| 1176. |
Tiny root hairs grown on the root of the seed |
| A. | absorbs water and oxygen |
| B. | absorbs water only |
| C. | absorbs mineral salts only |
| D. | absorbs water and mineral salts |
| Answer» E. | |
| 1177. |
Mostly the color of petals is |
| A. | bright |
| B. | dull |
| C. | dark |
| D. | light |
| Answer» B. dull | |
| 1178. |
In some plants, if a branch of a plant is cut and planted in the soil, roots will grow and form a new plant, this reproduction is known as |
| A. | tuber |
| B. | rooting branch |
| C. | cutting |
| D. | grafting |
| Answer» D. grafting | |
| 1179. |
The level of sound of normal conversation is |
| A. | 10 dB |
| B. | 20 dB |
| C. | 50 dB |
| D. | 60 dB |
| Answer» E. | |
| 1180. |
The note also depends on |
| A. | diameter of the drum |
| B. | thickness of string |
| C. | tension of string |
| D. | distance of wind holes |
| Answer» B. thickness of string | |
| 1181. |
Sound loses more energy in |
| A. | air |
| B. | vacuum |
| C. | liquid |
| D. | solid |
| Answer» B. vacuum | |
| 1182. |
Three main types of musical instruments are |
| A. | guitar, violin and piano |
| B. | drum, guitar and piano |
| C. | stringed instrument, wind instrument and percussion instrument |
| D. | stringed instrument, wind instrument and beat n bass instrument |
| Answer» D. stringed instrument, wind instrument and beat n bass instrument | |
| 1183. |
'Ultrasound' is a reflection of |
| A. | soft tissues only |
| B. | hard tissues only |
| C. | both soft and hard tissues |
| D. | hard muscles only |
| Answer» D. hard muscles only | |
| 1184. |
The closer the shell to the nucleus, the |
| A. | lower the energy level |
| B. | higher the energy level |
| C. | smaller the size |
| D. | lighter the mass |
| Answer» B. higher the energy level | |
| 1185. |
The ionic chemical formula of sodium is |
| A. | Na- |
| B. | Na+ |
| C. | Na- |
| D. | Na+ |
| Answer» C. Na- | |
| 1186. |
A chemical formula represents |
| A. | one atom of an element |
| B. | multiple atoms of an element |
| C. | atoms of molecules |
| D. | atoms of compounds |
| Answer» B. multiple atoms of an element | |
| 1187. |
Each 'atom' contains |
| A. | shells |
| B. | nucleus |
| C. | neutrons |
| D. | particles |
| Answer» C. neutrons | |
| 1188. |
The atomic number of 'beryllium' is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 1189. |
Who applied the word 'spectrum' to describe the rainbow of colors that combine to form white light? |
| A. | Isaac Newton |
| B. | Joseph Von Fraunhofer |
| C. | Michael Faraday |
| D. | Georg von Reichenbach |
| Answer» B. Joseph Von Fraunhofer | |
| 1190. |
'Refractive index' of silicon is |
| A. | 2.34 |
| B. | 3.22 |
| C. | 4.01 |
| D. | 4.02 |
| Answer» D. 4.02 | |
| 1191. |
A red car looks red because it |
| A. | reflects all colors except red |
| B. | absorbs all colors except green and blue |
| C. | absorbs all colors except indigo |
| D. | reflects red color and absorbs others |
| Answer» E. | |
| 1192. |
The light that has passed through a filter, is always |
| A. | dim |
| B. | bright |
| C. | sharp |
| D. | blur |
| Answer» B. bright | |
| 1193. |
'Refractive index' of ice is |
| A. | 0.5 |
| B. | 1.5 |
| C. | 1.33 |
| D. | 1.31 |
| Answer» E. | |
| 1194. |
When heat is provided to particles of solids, they gain |
| A. | heat energy |
| B. | potential energy |
| C. | kinetic energy |
| D. | thermal energy |
| Answer» D. thermal energy | |
| 1195. |
The melting point of ice is |
| A. | 0 °C |
| B. | 1 °C |
| C. | 100 °C |
| D. | 50 °C |
| Answer» B. 1 °C | |
| 1196. |
Two major requirements for preparation of ammonia are |
| A. | low temperature and high pressure |
| B. | low temperature and pressure |
| C. | high temperature and low pressure |
| D. | high temperature and pressure |
| Answer» E. | |
| 1197. |
Ethene is obtained from |
| A. | light oil |
| B. | coconut oil |
| C. | olive oil |
| D. | sunflower oil |
| Answer» B. coconut oil | |
| 1198. |
The chemist who started plastic industry was an |
| A. | Chinese |
| B. | Indian |
| C. | American |
| D. | British |
| Answer» D. British | |
| 1199. |
The density of gases is |
| A. | lower than liquids but higher than solids |
| B. | lower than solids but higher than liquids |
| C. | higher than solids and liquids |
| D. | lower than solids and liquids |
| Answer» E. | |
| 1200. |
Natural substances made up of long molecules are |
| A. | plastic and rubber |
| B. | rubber and wool |
| C. | wool and plastic |
| D. | wood and plastic |
| Answer» C. wool and plastic | |