The diagrams below are illustrations of two organisms. Study them and answer question 3 (a) to (f) (a)(i) Identify organisms A and B. (ii) Name the parts la...
Question 1 Report
The diagrams below are illustrations of two organisms. Study them and answer question 3 (a) to (f)
(a)(i) Identify organisms A and B.
(ii) Name the parts labeled I to X.
(b) State one function each of the parts labeled VI, VIII, IX and X.
(c) Name the specific habitats of organisms A and B.
(d) State three structural adaptations of organism A to its mode of life.
(e)(i) State three structural similarities between organisms A and B.
(ii) State three structural differences between organisms A and B.
(f)(i) Name the class of organisms A and B.
(ii) State three reasons for the answer in (f) (i).
(g) State one biological importance of organism A.
Answer Details
(a)(i) Identity of the organisms: A is a butterfly (Papilio sp.); B is a housefly (Musca sp.).
(a)(ii) Parts labelled I to X:
- I - head
- II - antenna
- III - thorax
- IV - forewing
- V - abdomen
- VI - antenna
- VII - head
- VIII - compound eye
- IX - wing
- X - leg
(b) Function of parts VI, VIII, IX and X
- VI (antenna): for feeling, and sensitivity to touch, smell and vibration.
- VIII (compound eye): for sight or vision.
- IX (wing): for flight and balancing during flight.
- X (leg): for walking, crawling and running.
(c) Specific habitats
A (butterfly) lives in gardens and farms among flowering plants and trees. B (housefly) lives around latrines, refuse dumps, sewage, exposed food and decaying organic matter.
(d) Three structural adaptations of organism A (butterfly)
- Large, broad wings for flight.
- A long, thin proboscis for sucking nectar from flowers.
- Long clubbed antennae and large compound eyes for sensitivity and wide vision.
(e)(i) Three structural similarities between A and B: both possess wings; both have the body divided into head, thorax and abdomen; both have a pair of antennae and a pair of compound eyes.
(e)(ii) Three structural differences between A and B
| Organism A (butterfly) | Organism B (housefly) |
|---|---|
| Broad wings | Narrow wings |
| Antennae clubbed and long | Antennae not clubbed and short |
| Two pairs of wings, hind wings present; scales on wings | One pair of wings, hind wings reduced to halteres; no scales |
(f)(i) Class of A and B: Insecta.
(f)(ii) Three reasons: the body is divided into head, thorax and abdomen; there are three pairs of jointed legs on the thorax; there is one pair of antennae and a pair of compound eyes (with wings present).
(g) One biological importance of organism A (butterfly): it pollinates flowers (and also serves as a source of food for other organisms).
Download The App On Google Playstore
Everything you need to excel in your exams
