Edexcel IAL Coordination in Animals and Plants Definitions

What is the function of cytokinins in plant growth?

• To promote cell division and shoot growth

• To inhibit cell division and root growth

• To promote stomatal closure

• To regulate flowering and fruit ripening

Which system in animals is primarily responsible for coordination and control?

• Nervous system

• Respiratory system

• Circulatory system

• Digestive system

What is coordination in animals and plants?

• The ability of organisms to respond to stimuli and regulate internal processes

• The process of synthesizing glucose from carbon dioxide and water

• The process of converting light energy into chemical energy

• The process of breaking down glucose to produce ATP

Which of the following is NOT a plant hormone?

• Insulin

• Auxin

• Abscisic acid

• Cytokinins

Which hormone is responsible for regulating blood glucose levels in animals?

• Insulin

• Glucagon

• Adrenaline

• All of the above

What is gravitropism?

• Growth of plants towards light

• Growth of plants away from light

• Growth of plants towards gravity

• Growth of plants away from gravity

What is phototropism?

• Growth of plants towards light

• Growth of plants away from light

• Growth of plants towards gravity

• Growth of plants away from gravity

What is the role of auxins in plant tropisms?

• To promote cell elongation on the shaded side of the stem, causing bending towards light

• To inhibit cell elongation on the shaded side of the stem, causing bending towards light

• To promote cell elongation on the lower side of the stem, causing bending towards gravity

• To inhibit cell elongation on the lower side of the stem, causing bending towards gravity

What is tropism in plants?

• The ability of plants to respond to environmental stimuli by growing towards or away from the stimulus

• The ability of plants to produce glucose through photosynthesis

• The ability of plants to convert light energy into chemical energy

• The ability of plants to break down glucose to produce ATP

What is the role of gibberellins in plant growth?

• To promote stem elongation and cell division

• To inhibit seed germination

• To regulate stomatal closure

• To promote leaf senescence