Test Your Knowledge On Plants

Explanation
The primary source of energy for all green plants is the sun. Plants use a process called photosynthesis to convert sunlight into energy. They have a pigment called chlorophyll that absorbs sunlight and uses it to create glucose, which is then used as a source of energy for the plant. Without sunlight, plants would not be able to produce the energy they need to grow and survive.

Explanation
Chloroplast is the correct answer because it is the organelle in plant cells where photosynthesis takes place. It contains chlorophyll, a pigment that captures sunlight and converts it into chemical energy through the process of photosynthesis. The chloroplasts are responsible for producing glucose and oxygen, which are essential for the plant's survival.

Explanation
Green plants are known as autotrophs because they are capable of producing their own food through the process of photosynthesis. They have specialized organelles called chloroplasts that contain chlorophyll, which enables them to convert sunlight, water, and carbon dioxide into glucose and oxygen. This ability to synthesize their own organic compounds makes them self-sufficient and independent of external food sources, distinguishing them from saprophytes, epiphytes, and heterotrophs.

Explanation
The flower is the organ of reproduction in plants. It contains the reproductive structures such as the male stamen, which produces pollen, and the female pistil, which contains the ovary where the seeds are formed. Flowers are responsible for the process of pollination, where pollen is transferred from the male to the female parts of the flower, leading to fertilization and the production of seeds. Therefore, the flower plays a crucial role in the reproductive cycle of plants.

Explanation
Cowpea is a legume because it belongs to the Fabaceae family, which is commonly known as the legume or bean family. Legumes are characterized by their ability to fix nitrogen in the soil through a symbiotic relationship with nitrogen-fixing bacteria. Cowpea is a versatile crop that is widely cultivated for its edible seeds and leaves. It is a rich source of protein, fiber, and various essential nutrients.

Explanation
Botany is the scientific study of plants. It involves the study of their structure, growth, reproduction, metabolism, and classification. Botanists study various aspects of plants, including their physiology, ecology, genetics, and evolution. They also investigate the interactions between plants and their environment, as well as their economic and medicinal uses. Botany plays a crucial role in understanding and conserving plant species, improving agricultural practices, and developing new drugs and materials derived from plants.

Explanation
Green plants are producers in the ecosystem. They use sunlight, water, and carbon dioxide to produce their own food through photosynthesis. This food provides energy for the plants themselves, as well as for other organisms in the ecosystem. Therefore, green plants play a crucial role in the ecosystem by converting sunlight into chemical energy, which is then transferred to other organisms through the food chain.

Explanation
Chitin is not a tissue in plants. It is a tough, protective substance found in the exoskeleton of arthropods and the cell walls of fungi. Xylem and phloem are both vascular tissues responsible for the transport of water, nutrients, and sugars in plants. Parenchyma is a type of ground tissue that functions in storage, photosynthesis, and support.

Explanation
Concentration does not directly affect plants. Plants are affected by various factors such as rainfall, soil pH, and sunlight, but concentration refers to the amount of a substance in a given volume or area, which does not have a direct impact on plants.

Explanation
A gymnosperm is a type of plant that produces naked seeds, meaning the seeds are not enclosed within a fruit. The pine tree is a gymnosperm because it produces cones that contain the seeds, and the seeds are not surrounded by any fruit or protective covering. In contrast, the sorghum plant and maize plant are both angiosperms, which are plants that produce seeds enclosed within fruits. The balsam plant is also an angiosperm, so it is not a gymnosperm.