L2: Diversity

Question 1

What are the basic characteristics of Insects?

Answer 1

Chitinous exoskeleton
Head & Thorax & Abdomen
1 pair of compound eyes
1 par of antennae
2 pairs of wings
3 pairs of jointed legs

Question 2

What is the outer covering called?

Answer 2

Integument

Question 3

What is the purpose of chitin?

Answer 3

Strengthen and waterproofing

Question 4

What are the oceli?

Answer 4

Simple eyes

Question 5

What parts of the insect are used in chemo-reception?

Answer 5

Odour: antennae
Taste: mouthparts, tarsi

Question 6

What do hygro-receptors do?

Answer 6

Humidity

Question 7

What part of an insect are used in mechano-reception?

Answer 7

Modified hairs “setae” and sensillae

Question 8

What do ocelli detect?

Answer 8

Light intensity, photoperiod

Question 9

What do compound eyes detect?

Answer 9

Shape, movement, distance, colour?

Question 10

What are the examples of bee vision?

Answer 10

UV, polarisation, distance, speed

Question 11

What is the “waggle dance”?

Answer 11

Honeybees recruit nest mates, calculate the distance and angle from the sun.

Question 12

How do bees calculate distance?

Answer 12

The speed of an image moving across their eyes = “optic flow”

Question 13

What can antennae be used to detect?

Answer 13

Plant chemistry, animal chemistry, decaying material, pheromones

Question 14

How can you test an antennae?

Answer 14

Electroantennogram - measured the response of insect antennal receptor cells to smells

Question 15

What are the adaptations for insects walking?

Answer 15

Adaptations for adhesion/gripping surfaces; claws, arolair pads, pulvilli

Question 16

What are the ‘pulvilli’?

Answer 16

Pads on the bottom of the feet to help with grip

Question 17

What are the ‘ommatidium’?

Answer 17

Lenses in the compound eye