OBJECTIVE FORESTRY

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FORESTRY

PLANT AND WOOD ANATOMY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Max did an experiment. He planted and observed flower bulbs. He planted three bulbs in a tray and placed them in the refrigerator. He planted three more bulbs in another tray and placed them in a warm, heated room. Compared to the bulbs in the refrigerator, what changes will Max most likely observe in the bulbs in the warm room?
A
Their stems will grow downward.
B
Their leaves will grow more quickly.
C
Their flowers will bloom more slowly.
D
Their roots will grow up toward light.
Explanation: 

Detailed explanation-1: -Plant Tropisms A tropism is a turning toward or away from a stimulus in the environment. Growing toward gravity is called geotropism. Plants also exhibit phototropism, or growing toward a light source. This response is controlled by a plant growth hormone called auxin.

Detailed explanation-2: -Hydrotropism is the mechanism by which plants grow toward the presence of water in response to stimuli related to water. In this case, it is a form of positive tropism, which is the response of a plant to a stimulus that leads to growth or movement.

Detailed explanation-3: -The mechanism of phototropism is as follows: Light of wavelength 450 nm illuminates the plant. The photoreceptor receives the light, reacts to it, and initiates a response. Phototropins are the proteins that receive blue light during phototropism. Auxin moves to a darker side in the stem when exposed to light.

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