Correct Answer: A. strengthening the stem

Correct Answer: A) haptotropism

Explanation

Yam tendrils are part of the yam plant that grows and climbs on other plants for support. This growth response is called tropism, which is the directional growth movement of plants in response to a stimulus. There are different types of tropism, such as phototropism, geotropism, hydrotropism, chemotropism, and haptotropism. Phototropism is the growth response of plants towards light, geotropism is the response of plants towards gravity, hydrotropism is the response of plants towards water, and chemotropism is the response of plants towards chemicals. However, the correct answer for this question is haptotropism. Haptotropism is the directional growth movement of plants in response to touch or contact with an object. In the case of yam tendrils, they grow and climb on other plants for support by using their sense of touch or contact. This allows the yam plant to grow taller and access more sunlight for photosynthesis. In summary, the growth response of yam tendrils climbing for support is an example of haptotropism, which is the directional growth movement of plants in response to touch or contact with an object.

Correct Answer: A. movement of water from root hairs into cortical cell

Explanation

Movement of water from root hairs into cortical cells involves osmosis. When a plant's roots absorb water from the soil, it passes through the root hairs and moves into the cortical cells (which are part of the root's inner layer) through osmosis. This osmotic movement of water helps maintain water balance and nutrient distribution within the plant.

Correct Answer: C. symbiosis

Correct Answer: C. streamlined body

Correct Answer: A. 1.2 per m^2

Correct Answer: B. X = Starch and Y = Maltose

Correct Answer: B) chlorophyll

Explanation

Some flowering plants contain accessory pigments which give them their distinct colors. However, these plants still contain a main pigment that is essential for their survival. The question is asking which pigment is still present in these plants despite the presence of accessory pigments. The correct answer to this question is Option B: chlorophyll. Chlorophyll is the main pigment found in plants that is responsible for photosynthesis, the process by which plants convert sunlight into energy. Accessory pigments, such as carotene and xanthophyll, help to absorb additional light energy for the plant, but they do not replace the function of chlorophyll. It is important to note that melanin, which is Option A, is not a pigment found in plants. It is a pigment found in animals and is responsible for skin and hair color. Therefore, Option A is not correct. For more information on the functions of pigments in plants, please see the relevant sections of your Biology textbook.

Correct Answer: B. pericycle

Correct Answer: A. Variations in the physiological processes and functions of organisms

Explanation

Physiological variation in biology refers to the variations in the physiological processes and functions of organisms. Physiological variation encompasses the variations in the internal processes and functions of organisms, including metabolic processes, hormone regulation, immune responses, cellular functions, and physiological adaptations.