Plant Defenses

What protects plants from threats that could potentially kill the plant?

• Roots

• Waxy coating on top of leaves

• Structures for defense

• Xylem and phloem

Two examples of plant structures for defense are:

• Flowers and seeds

• Poison and fruit

• Fruit and roots

• Thorns and poison

Both carnivorous plants and those that can close their leaves to protect themselves exhibit:

• Hydrotropism

• Thigmotropism

• Positive gravitropism

• Negative gravitropism

What three functions do leaves have that serve the plant?

• Location of photosynthesis

• Location of transpiration

• Location of nutrient absorption

• Location of respiration

Tags

NGSS.MS-LS1-6

In vascular plants, stems serve the purpose of:

• Food storage and support

• Carbon dioxide production

• Location of photosynthesis

• Seed dispersal

What benefit do root hairs give to plants?

• They help nonvascular plants absorb water

• They help vascular plants stay anchored to the ground and absorb water/nutrients

• They help nonvascular plants stay anchored to the ground and absorb water/nutrients

• They help vascular plants absorb water

Tags

NGSS.MS-LS2-1

Seeds can be dispersed by wind, water, and _________.

• fire

• plants

• animals

• fungi

What protects the embryo (inside of a seed) from injury and from drying out?

• seed mask

• seed cover

• seed protector

• seed coat

Vines growing up a pole to stabilize is an example of:

• geotropism

• thigmotropism

• hydrotropism

• phototropism

Which of the following is a structural plant defense?

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