HORTICULTURE

HORTICULTURE SCIENCE

PLANT BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Invasive plant species affect the interactions of living and nonliving components of an ecosystem, so the removal of invasive plants is often necessary. The goal of most plant-control methods is to disrupt or inhibit the function of different plant systems. For example, insects can be used to chew through roots in order to reduce a plant’s ability to absorb water. Which of these functions would be most immediately affected by a reduction in water uptake by roots?
A
Disease resistance
B
Seed dispersal
C
Sunlight absorption
D
Photosynthesis
Explanation: 

Detailed explanation-1: -Plants that do not occur naturally in a region but proliferate in the area they have been introduced into, and cause several negative impacts (such as affecting native biodiversity, causing economic losses and harming human health) in these new habitats, are called invasive plants.

Detailed explanation-2: -Which statement best explains why the grass tips of the experimental group bent toward the light? The side facing the light has a greater chance of absorbing carbon dioxide from the atmosphere.

Detailed explanation-3: -Photosynthesis is the process by which plants convert the energy from sunlight into food; therefore, photosynthesis is directly dependent on the plant’s ability to respond to the direction of light.

Detailed explanation-4: -Under normal light conditions auxins are spread out in the plant. But when sunlight varies, auxin is broken down on the sunnier side of the stem. The higher concentration of auxin on the shady side causes the plant cells on that side to grow more so it bends toward the light.

There is 1 question to complete.