AP BIOLOGY

ANIMAL BEHAVIOR

INTRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Phototropism
A
The orientation of a plant or other organism in response to light, either toward the source of light or away from it
B
A plant that flowers only after being exposed to light periods shorter than a certain critical length, as in early spring or fall
C
The period of daylight, specific in length for any given species, that appears to initiate flowering in long-day plants or inhibit flowering in short-day plants
D
A plant that flowers only after being exposed to light periods longer than a certain critical length, as in summer
Explanation: 

Detailed explanation-1: -Phototropism is the orientation of a plant or other organism in response to light, either toward the source of light (positive phototropism) or away from it (negative phototropism). Phototropism is the capacity of the plant to reorient the shoot expansion towards the direction of the light source.

Detailed explanation-2: -Phototropism is the ability of the plant to re-orient the shoot growth towards a direction of light source. Phototropism is important to plants as it enhances the ability of plants to optimize their photosynthetic capacity. As discussed above, phototropic response is exclusively controlled by phots.

Detailed explanation-3: -Phototropism, or the differential cell elongation exhibited by a plant organ in response to directional blue light, provides the plant with a means to optimize photosynthetic light capture in the aerial portion and water and nutrient acquisition in the roots.

Detailed explanation-4: -Phototropism is the phenomenon by which the plant bends in the direction of light. Light is required by the plants to stimulate energy production by the process of photosynthesis.

Detailed explanation-5: -phototropism in British English 1. the growth response of plant parts to the stimulus of light, producing a bending towards the light source. 2. the response of animals to light; phototaxis.

There is 1 question to complete.