Answer:
d. All of these
Explanation:
A synaptic cleft or synaptic gap is formed during synapsis. It is a gap between membrane of a axon end bulb and a membrane of a target cell. The target cell can be a muscle cell, a neuron, a gland. The membrane of a axon is called pre-synaptic membrane and membrane of a target cell is called post-synaptic membrane and the space between two membranes is called synaptic cleft. Through the synaptic cleft impulse is transmitted with the help of neurotransmitters such as acetylcholine.
Answer:
A. Phototropism and geotropism are adaptations of plants that allow for survival.
Explanation:
Ideally, TROPISM is the growth response of plants to their environment due to external stimuli as rightly stated in this question. However, based on what stimulus the plant is responding to, there are different types of stimulus.
Phototropism (photo-light) is the response of an organism to a light source while Geotropism (geo- gravity) is the response of an organism to gravity. Hence, based on this question, a plant's response to moonlight is phototropism while it's response to gravity is geotropism.
Also, tropism can either be positive or negative depending on whether the response is towards the stimulus (positive) or away from the stimulus (negative). Therefore, the FALSE statement is "Phototropism and geotropism are adaptations of plants that allow for survival"
