Observe specimens A, B, C and D closely and use them to answer questions 1(a) to 1(e). (a)(i) Specimen A Into its division and class. (ii) State three obser...
Question 1 Report
Observe specimens A, B, C and D closely and use them to answer questions 1(a) to 1(e).
(a)(i) Specimen A Into its division and class.
(ii) State three observable features of specimen A which are characteristics of the class mentioned in 1(a)(i) above.
(b) State the relationship between specimen A and: (i) specimen B; (ii) specimen C; (iii) specimen D.
(c)(i) From. your observations of specimens B and C, what type of plant is specimen A? (ii) Suggest the agent of pollination ot specimen B.
(iii) State two reasons for the answer in 1(c)(i) above.
(d) Classify specimen D fully according to origin and structure.
(e) Make a drawing 8 cm 10 cm long of specimen C and label fully.
Answer Details
(a)(i) Specimen A is classified as follows:
- Division: Angiospermophyta (Magnoliophyta)
- Class: Monocotyledoneae (Liliopsida)
(a)(ii) Observable features of A which are characteristic of monocotyledons are:
- It has narrow, elongated leaves.
- The leaves have parallel venation.
- It has fibrous roots.
- The base of each leaf forms a sheath around the stem.
(b)
- Specimen B is the male flower or male inflorescence (tassel) of specimen A.
- Specimen C is the female flower or female inflorescence (cob) of specimen A.
- Specimen D is the fruit, also called the grain or seed, of specimen A.
(c)(i) Specimen A is a monoecious plant.
(c)(ii) The agent of pollination of specimen B is wind.
(c)(iii) This is because the male inflorescence (B) and female inflorescence (C) are separate, but both occur on the same maize plant.
(d) Specimen D is a true, simple, dry, indehiscent fruit known as a caryopsis. Its pericarp is fused with the seed coat.
(e) Labelled drawing of specimen C, the female maize inflorescence (cob):
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