Science test

Question 1

The CWB larva constantly molts ?

Answer 1

The latonrva grows too large for its exoskeleton, so it breaks out of the exoskeleton, revealing a baggy inner skin

Question 2

Frass

Answer 2

Larva droppings are called frass. Final insect larva of a moth.

Question 3

How many “instars” or stages of development does the CWB have?

Answer 3

5 instars

Question 4

What are the most important clues for insects to look for when determining what to eat

Answer 4

Odor and taste

Question 5

What are some characteristics of plants in the Brassicaceae, or mustard, family?

Answer 5

A sharp, strong odor caused by mustard oils and chemicals called glucosides.

Question 6

What is the “plant’s chemical defense mechanism”? Is it effective?

Answer 6

Glucosides are chemicals that are supposed to make the plant seem unappetizing. It doesn’t work that well because there are a whole group of insects that are actually attracted to the glucosides.

Question 7

Why will the droppings from the CWB be the same color as the mixture they eat?

Answer 7

Butterflies cannot break down the food coloring, so their droppings will be the same color as what they ate.

Question 8

What does metamorphosis mean?

Answer 8

To transform or change

Question 9

Why are the larvae light green?

Answer 9

For camouflage on leaves

Question 10

What do adult CWB feed on? Why don’t they ever grow larger?

Answer 10

They feed on nectar which is a mixture of sugar, water and minerals. They use the sugar as energy - they do not store any extra energy or grow any bigger.

Question 11

How do male butterflies find their mate?

Answer 11

Females release a special chemical (pheromone) that attracts the males.

Question 12

If a female lays up to 300 eggs, then why don’t we have butterflies everywhere?

Answer 12

Many eggs will not hatch, some larva will be eaten or die, and they have a short lifespan

Question 13

What happens to chrysalises in the fall? Why?

Answer 13

Chrysalises enter diapause, a dormant state, for the fall and winter. This is to ensure the adult butterfly that emerges will survive.

Question 14

How does an animal’s diet influence their “niche,” or position, in an ecosystem

Answer 14

What an organism eats determines where it can live.

Question 15

How were gypsy moths first introduced to the U.S?

Answer 15

By accident. A scientist was studying them and a few escaped.

Question 16

What was done to try to control the gypsy moth population in the U.S? What was the result? What lesson was learned from this?

Answer 16

A fly that ate gypsy moth larva was is brought to the U.S. The fly did eat some gypsy moths but also fed on a rare moth that is now endangered. The lesson learned is that extensive research must be done on an organism before introducing it to a new ecosystem.

Question 17

4 types of “Crucifers”

Answer 17

Cabbage, brussel sprouts, cauliflower and WFP

Question 18

Why was the fast plants experiment conducted on a space station

Answer 18

It was the first time plants had been grown in microgravity, do it proved that it was possible to grow food in space so the astronauts can have fresh produce.

Question 19

What are macronutrients and how do they benefit the growth of plants?

Answer 19

Essential nutrients that plants need in larger amounts

Question 20

How much of each macronutrients is in this Turf Fertilizer?

Answer 20

Nitrogen (N): 16
Phosphorus (P): 0
Potassium(K): 8

Question 21

What are Micronutrients?

Answer 21

10 nutrients needed in smaller amounts

Question 22

Root monocots

Answer 22

Usually comprised of small branching fibers

Question 23

Root dicots

Answer 23

Usually have one central root with secondary roots growing from it

Question 24

Stem monocots

Answer 24

Bundles of veins scattered throughout the stem

Question 25

Stem dicots

Answer 25

Bundles of veins are arranged in a neat circle around the stem

Question 26

What is a seed?

Answer 26

An embryo (the tiny beginnings of a plant- stem, roots, leaves) contains stored food and a protective outer coat

Question 27

What is a cotyledon?

Answer 27

A seed leaf

Question 28

Germination

Answer 28

The process of a seed becoming a plant by sprouting its’roots. This takes place underground.