Worksheets3.6.1.1 Survival and response
Total questions: 15
Worksheet time: 8mins
What is the primary role of specific growth factors in flowering plants?
To provide nutrients to the plant
To regulate growth in response to directional stimuli
To protect the plant from pests
To increase the plant's water absorption
Which plant hormone is primarily involved in cell elongation in response to gravitropism and phototropism?
Gibberellin
Cytokinin
Indoleacetic acid (IAA)
Ethylene
How does indoleacetic acid (IAA) affect cell elongation in the shoots of flowering plants?
It inhibits cell elongation
It promotes cell elongation
It has no effect on cell elongation
It causes cell death
What is the effect of high concentrations of indoleacetic acid (IAA) on root growth?
It promotes root growth
It inhibits root growth
It has no effect on root growth
It causes root cells to die
What is gravitropism?
Growth response to light
Growth response to gravity
Growth response to water
Growth response to temperature
What is phototropism?
Growth response to light
Growth response to gravity
Growth response to water
Growth response to temperature
What is the primary purpose of taxes in mobile organisms?
To find food
To maintain a favourable environment
To reproduce
To communicate with other organisms
What is a kinesis?
A directional movement in response to a stimulus
A non-directional movement in response to a stimulus
A growth response to light
A growth response to gravity
Which of the following is an example of a simple reflex?
A plant bending towards light
A human pulling their hand away from a hot surface
A bird building a nest
A fish swimming upstream
How many neurons are involved in a three-neurone simple reflex arc?
One
Two
Three
Four
In a three-neurone reflex arc, which type of neuron carries the signal from the receptor to the central nervous system?
Motor neuron
Sensory neuron
Interneuron
Relay neuron
In a three-neurone reflex arc, which type of neuron carries the signal from the central nervous system to the effector?
Motor neuron
Sensory neuron
Interneuron
Relay neuron
What is the role of the interneuron in a three-neurone reflex arc?
To detect the stimulus
To transmit the signal to the effector
To connect the sensory neuron to the motor neuron
To provide energy for the reflex
Which of the following is a characteristic of a simple reflex?
It is voluntary
It is slow
It is involuntary
It requires conscious thought
What is the main advantage of a simple reflex?
It allows for complex decision-making
It provides a rapid response to stimuli
It conserves energy
It enhances learning
