Plant Movement and Taxis Concepts

This video explores the various types of plant movements, categorized into endonom and esionom movements. Endonom movements are driven by internal stimuli, while esionom movements are influenced by external factors. Esionom movements are further divided into tropism, nasti, and taxis. Tropism involves directional growth towards or away from stimuli, nasti involves non-directional responses, and taxis involves movement towards stimuli. The video concludes with a summary and encourages viewers to engage with the channel.

What is a key difference between movement in plants and animals?

• Animals move passively like plants.

• Plants move actively like animals.

• Plants do not move at all.

• Plants move passively in response to stimuli.

What causes endonomic movement in plants?

• Chemical reactions

• Gravitational forces

• Internal stimuli

• External stimuli

Which type of tropism involves plant movement towards light?

• Phototropism

• Hydrotropism

• Geotropism

• Thigmotropism

What is an example of a plant exhibiting geotropism?

• A plant growing towards a light source

• A vine wrapping around a pole

• Leaves closing at night

• Roots growing downward into the soil

Which type of nastic movement is influenced by light?

• Thigmonastic

• Nyctinastic

• Photonastic

• Thermonastic

What triggers nyctinastic movements in plants?

• Temperature changes

• Darkness

• Touch or vibration

• Chemical stimuli

Which nastic movement is caused by temperature changes?

• Photonastic

• Nyctinastic

• Thermonastic

• Thigmonastic

What is taxis movement in plants?

• Movement due to internal water pressure

• Growth in response to light

• Random movement in response to stimuli

• Movement towards or away from a stimulus

Which type of taxis involves movement towards light?

• Geotaxis

• Chemotaxis

• Thigmotaxis

• Phototaxis

What is an example of chemotaxis in plants?

• Pollen tube growing towards ovules

• Stems bending towards light

• Leaves opening in sunlight

• Roots growing towards water