| QUESTION | ANSWER | EXPLANATION |
Which of the following is dispersed by wind?
• Orange
• Love Grass
• Calotropis
• Spear Grass
• Squirting Cucumber
| Calotropis | Calotropis is dispersed by wind (anemochory). In calotropis, a tuft of hair, called plume or coma develops as a crown of seeds. |
Which of the following is dispersed by wind?
• Clematis
• Oxalis
• Water Lily
• Castor
• Balsam
| Clematis | Clemantis is dispersed by wind (anemochory). In clemantis, the style becomes feathery. |
Which of the following is not dispersed by wind?
• Orchids
• Cinchona
• Coconut
• Oroxylon
• Drumstick
| Coconut | Coconut is dispersed by water (hydrochory). In coconut, a fibrous mesocarp is observed which encloses air, makes it buoyant and enables it to float. |
The male flower of the hazel plant is known as the _______.
• corymb
• capitulum
• catkin
| catkin | |
During _______, the pollen grains are transferred from the anthers of one flower to the stigma of another flower.
• self-pollination
• cross-pollination
| cross-pollination | During the process of cross-pollination (allogamy) in a flowering plant, the pollen grains are transferred from the anthers of one flower to the stigma of another flower. |
Which of the following is dispersed by animals?
• Acacia
• Caesalpenia
• Hogweed
• Maple
• Yam
| Hogweed | Hogweed is dispersed by animals (zoochory). Sticky, glandular hairs are observed in hogweed. |
Which of the following is not dispersed by animals?
• Martynia
• Boerhaavia
• Tribulus
• Guava
• Lotus
| Lotus | Lotus is dispersed by water (hydrochory). In lotus, a spongy thalamus is observed with fruitlets embedded in it. |
In a bean, water is taken in through the _______.
• integument
• micropyle
• cotyledon
| micropyle | A bean takes in water through a small opening called the micropyle. |
Insects visit flowers in the search of _______.
• nectar
• fragrance
• water
| nectar | Insects visit flowers in the search of sweet nectar. |
What is a seed called before it undergoes fertilization?
• Ovary
• Ovule
• Embryo
| Ovule | A seed is called an ovule before it undergoes fertilization. |
Which of the following is not dispersed by animals?
• Xanthium
• Urena
• Mimosa
• Plumbago
• Poppy
| Poppy | Poppy is dispersed by wind (anemochory). |
The fleshy base of a flower forming the top of the flower-stalk is called the _______.
• receptacle
• pedicel
• peduncle
| receptacle | The fleshy base of a flower to which the different floral parts are attached is called the receptacle. It forms the top of the flower-stalk. It is also known as the thalamus. |
During _______, the pollen grains are transferred from the anthers of a flower to the stigma of the same flower.
• cross-pollination
• self-pollination
| self-pollination | During the process of self-pollination (autogamy) in a flowering plant, the pollen grains are transferred from the anthers of a flower to the stigma of the same flower. |
Which of the following plants has a rhizome?
• Solomon's Seal
• Crocus
• Daffodil
• Tulip
• Potato
| Solomon's Seal | A rhizome is observed in Solomon's Seal. |
Scientists conduct germination tests to study the average number of seeds in every hundred that are likely to germinate.
• True
• False
| True | Germination tests are conducted by scientists to study the average number of seeds in every hundred that are likely to germinate. |
The conditions required for seeds to germinate are oxygen, water and warmth.
• True
• False
| True | The conditions required for seeds to germinate are oxygen, warmth and water (moisture). |
The hard wood in the center of a tree trunk is referred to as 'heartwood'.
• True
• False
| True | 'Heartwood' is the hard wood in the center of a tree trunk. |
In a flowering plant, fruits begin to form after the processes of pollination and fertilization.
• True
• False
| True | After the processes of pollination and fertilization in a flowering plant, fruits begin to form. |
Even though a seed has been kept for several years, it will eventually germinate.
• True
• False
| False | A seed which has been kept for several years will not germinate. |
The growth of a pollen tube enables pollination to take place.
• True
• False
| False | The growth of a pollen tube enables the process of fertilization to take place. The pollen tube grows from a pollen grain. It moves down the style to fuse with an ovule. |
