Study specimens L and M and answer questions (a) to (e). (a) Classify each of specimens L and M into its: (i) Phylum L: ________ M: _______ (ii) Class L:___...
Question 1 Report
Study specimens L and M and answer questions (a) to (e).
(a) Classify each of specimens L and M into its:
(i) Phylum L: ________ M: _______
(ii) Class L:_______ M:_______
(b)
(i) State three observable features of members of the class of specimen L.
(ii) Name three other classes of the phylum to which specimen L belongs.
(c)
(i) State two ways each by which specimens L and M are of economic importance. L: _______ M: ________
(ii) State five ways by which specimen L can be controlled.
(d)(i) State five observable differences between specimens L and M.
(ii) State four observable similarities between specimens L and M.
(e) Name one habitat each of specimens L and M. L:_______ M:_______
Answer Details
(a) Classification
| Specimen L (mosquito) | Specimen M (butterfly) | |
|---|---|---|
| (i) Phylum | Arthropoda | Arthropoda |
| (ii) Class | Insecta | Insecta |
(b)(i) Three observable features of the class Insecta: body divided into head, thorax and abdomen; three pairs of jointed walking legs; a pair of jointed antennae (also wings, compound eyes and a chitinous exoskeleton).
(b)(ii) Three other classes of Phylum Arthropoda: Crustacea, Arachnida and Chilopoda (or Diplopoda).
(c)(i) Two ways each is of economic importance
- L (mosquito): it is a vector that transmits diseases such as malaria, and its bites cause discomfort and disturb rest.
- M (butterfly): it pollinates flowers and has aesthetic (ornamental) value, though its larvae destroy crops such as citrus by feeding on them.
(c)(ii) Five ways specimen L (mosquito) can be controlled
- Removing all stagnant water around the house to prevent breeding.
- Pouring oil on stagnant water to suffocate the larvae and pupae.
- Spraying insecticides in and around the rooms to kill adult mosquitoes.
- Clearing bushes around the house to remove hiding and breeding places.
- Sleeping under treated mosquito nets to prevent bites.
(d)(i) Five observable differences between specimens L and M
| Specimen L (mosquito) | Specimen M (butterfly) |
|---|---|
| Small, slender body | Larger, broader body |
| One pair of narrow, transparent wings | Two pairs of broad wings covered with coloured scales |
| Dull greyish colour | Brightly coloured, patterned |
| Feathery (plumose) antennae | Clubbed antennae |
| Proboscis is slender and piercing | Proboscis is long and coiled for sucking nectar |
(d)(ii) Four observable similarities between L and M: both have the body in three divisions (head, thorax and abdomen); both have three pairs of legs and one pair of antennae; both possess wings and a pair of compound eyes; both have a chitinous exoskeleton and a proboscis for feeding.
(e) One habitat each: L (mosquito): damp, dark places near stagnant water. M (butterfly): gardens and grassland among flowering plants.
Download The App On Google Playstore
Everything you need to excel in your exams
