Brain Pop - Plant Growth

What role do insects play in the fertilization process?

• they transport seeds from the tree to the ground
• they collect nectar from the interior parts of plants
• they deliver pollen from the stamens of plants to the ovaries of other plants
• they eat the fruit, exposing the seeds so that they can sprout and grow

Under the right conditions, a seed can germinate in the ground. What is the best synonym for "germinate?"

• sprout
• die
• travel
• divide

Place the following events in sequence: A) A plant's ovary begins growing larger and fleshier; B) The seed inside a plant begins to grow; C) Pollen fertilizes a plant's egg

• b, c, a
• c, a, b
• a, b, c
• c, b, a

Which part of a plant contains male sex cells?

• pistil
• stamen
• fruit
• seed

Why do seeds have tough, protective coverings? Choose the best answer.

• so they can travel long distances without getting damaged
• so they can survive the fall from a tree to the ground
• so they can easily be digested by animals
• to serve as camouflage

What might happen if a vascular plant's xylem was damaged?

• the plant could no longer undergo photosynthesis
• the plant would no longer have leaves
• the plant would not be able to receive water and nutrients from the soil
• the plant would no longer have flowers

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is the difference between annuals and perennials?

• annuals produce flowers, perennials do not
• annuals are very large, perennials are very small
• annuals use xylem to transport nutrients, perennials use phloem to transport nutrients
• perennials live for many growing seasons, annuals usually only live for one or two growing seasons

What does a new seed need to grow?

• dark, cold temperatures, nitrogen, and ice
• light, water, nutrients, carbon dioxide, and warm temperatures
• a spot right next to its parent plant
• extra pollen from its parent plant

Tags

NGSS.MS-LS2-1

A fruit is another name for what part of a plant?

• the pistil
• the stamen
• the seed
• the ovary

Read the following passage:
MOTHER NATURE
There are millions of herbivores—plant-eaters—on this planet, and their constant snacking can prevent young plants from reaching maturity and reproducing. So what’s a plant to do? Well, thanks to the wonders of natural selection, plants have evolved a number of defenses to prevent herbivores from eating them. 
Many plants produce chemicals that have unpleasant effects. Some have poisonous or foul-tasting leaves, flowers, or fruit. Others, like poison ivy, poison oak, and poison sumac, can induce painful rashes on animals’ skin. 
Thorns, which you can find on a variety of bushes, bite back when an animal chomps into them, as do leaves with barbs or spines. Saps and gums can be produced that trap herbivorous insects, and slippery, waxy leaves are very difficult for animals to eat. Other plants have leaves that physically close up in response to touch or vibrations.
There are also plants which enter into symbiotic relationships with other species. Trees in the genus Macaranga provide homes to ant colonies, which defend them from herbivores, while other plants have close relationships with fungi or microbes that are poisonous when eaten. 
The weirdest defense mechanism we’ve heard of? When they’re attacked by herbivores, certain plant species release chemicals that attract carnivores—and when these predators show up, any herbivore that doesn’t run for the hills ends up as lunch.
Based on the passage, what can you infer that word "symbiotic" means?

• benefit each other
• harm each other
• stay away from each other