Test: Nutrition in Plants - Class 7 MCQ

The process of obtaining food by living organisms. Nutrition refers to the process of obtaining food and utilizing it for growth and development.

The process of producing food by oneself. Autotrophs are organisms that can produce their own food through photosynthesis.

The process of producing food by oneself. Photosynthesis is the process by which autotrophic organisms produce their own food using sunlight, carbon dioxide, and water.

Conversion of sunlight into chemical energy. Photosynthesis is the process of converting sunlight into chemical energy in the form of glucose.

Photosynthesis is important as it produces oxygen, provides energy, and helps in the growth and development of plants.

Sunlight, carbon dioxide, water, and chlorophyll. These are the necessary conditions for photosynthesis to occur.

Heterotrophs are organisms that cannot produce their own food and rely on other organisms for nutrition.

Plants that obtain food from other plants. Parasitic plants obtain their nutrition by attaching themselves to the host plant and obtaining nutrients from it.

Plants that obtain food from dead organic matter. Saprophytic plants obtain their nutrition from dead and decaying organic matter.

Plants that obtain food from animals. Insectivorous plants obtain their nutrition by trapping and digesting insects and other small organisms.

Plants that obtain food from other plants. Symbiotic plants obtain their nutrition by forming a symbiotic relationship with other plants and obtaining nutrients from them.

Nitrogen is not a necessary condition for photosynthesis. The necessary conditions for photosynthesis are sunlight, carbon dioxide, water, and chlorophyll.

Oxygen is the product of photosynthesis. During photosynthesis, plants produce oxygen and glucose from carbon dioxide and water.

A plant is an autotrophic organism as it can produce its own food through photosynthesis.

A lion is a heterotrophic organism as it cannot produce its own food and relies on other organisms for nutrition.

Chlorophyll absorbs sunlight during photosynthesis, which is used to produce glucose and oxygen.

The correct option is B Dodder plant
Dodder plant, which belongs to the genus Cuscuta is a yellow, orange, or red (rarely green) parasitic plants. After dodder attaches itself to a plant, it wraps itself around it. If the host contains food beneficial to dodder, the dodder produces haustoria that insert themselves into the vascular system of the host. The original root of the dodder in the soil then dies.

So, the correct answer is 'Dodder plant'.

Mushroom is a saprophytic plant that obtains its nutrition from dead and decaying organic matter.

Venus flytrap is an insectivorous plant that traps and digests insects for nutrition.

In lichens, the interaction between algae and fungi is a symbiotic relationship. Algae feed fungi that lack chlorophyll pigments. Fungi, on the other hand, help algae by providing protection and aiding in water absorption. No one is injured in this form of connection, and both parties benefit from it.