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1990 WAEC Agricultural Science Practical The diagram below represents the cross-section of citrus fruit. Study it carefully and use it...

Agricultural Science
WAEC 1990

The diagram below represents the cross-section of citrus fruit. Study it carefully and use it to answer the following questions.


(a) ldentify the fruit

(b) What type of fruit is it?

(c) Name the parts labelled A to D.

(d) State three varieties/cultivars of the citrus.

(e) State;
(i) The method of propagation
(ii) Maturation period of the citrus.

(f) List (i) two diseases and
(ii) two pests of the citrus.

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Explanation

(a) Orange/citrus fruit.

(b) Berry / Hesperidium

(c) A= Epicarp. B=Mesocarp. C= Endocarp, D = Seed

(d)

  • Sweet orange
  • lime
  • grape
  • lemon
  • tangerine
  • bitter orange.

(e)(i) By seed propagation e.g. budding
(ii) 3-7 years

(f) (i) Two diseases;

  • Gummosis
  • Tristeza
  • Citrus Scab

(ii) Two pests;

  • Thrips 
  • Red mites,
  • scale insects,
  • aphids,
  • fruit borers,
  • leaf hoppers.

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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
Join your school's WhatsApp group
Join your school's WhatsApp group
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709