Joint Universities Preliminary Examination Board (JUPEB) has scheduled JUPEB Biology Practical 2023 Questions And Answers to Kick off Today Tuesday 8th – August – 2023.
JUPEB Biology Practical 2023 Questions And Answers
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JUPEB Biology Practical 2023 Questions And Answers
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JUPEB Biology Practical Answer 2023
NUMBER ONE
(1a)
Specimen A – Giant land snail:
Class: Gastropoda (Mollusca)
Specimen B – Spider:
Class: Arachnida
Specimen C – Bird:
Class: Aves
Specimen D – Tapeworm:
Class: Cestoda (Platyhelminthes)
(1bi)
(i) Food source: Giant land snails are consumed as a delicacy in many cultures around the world. They are high in protein and low in fat making them a valuable food source.
(ii) Cosmetics industry: Snail slime is used in various cosmetic products such as face creams and serums due to its potential skin benefits.
(iii) Farming and gardening: Some people keep giant land snails as pets or for farming purposes such as for their eggs or as a natural pest control method in gardens.
(iv) Education and research: Giant land snails are often used in educational settings or for scientific research to study their biology behavior and ecological impact.
(1bii)
(i) Hooks and suckers: Tapeworms have specialized structures such as hooks and suckers on their scolex (head which help them to attach to the intestinal lining of their host. This adaptation allows the tapeworm to remain firmly attached and obtain nutrients from the host’s digestive system.
(ii) Ability to produce many eggs: Tapeworms are highly reproductive parasites and can produce a large number of eggs. This adaptation increases their chances of survival and ensures the continuation of their life cycle. The eggs are released into the host’s feces where they can be ingested by another host and continue the parasitic cycle.
(1c)
(PICK ANY TWO)
(i) Nephritis
(ii) Kidney stones
(iii) Renal failure
(iv) Renal tumors
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NUMBER TWO
(2a)
Specimen P: Capsule
Specimen Q: Caryopsis
Specimen R: Berry
Specimen S: Drupe
(2b)
Draw the diagram
(2c)
(PICK TWO ONLY)
(i) Specimen S belongs to the drupe type of fruit, while Specimen P is a simple capsule.
(ii) Drupe fruits like Specimen S have a hard endocarp surrounding the seed, whereas simple capsule fruits like Specimen P split open to release their seeds.
(iii) Specimen S fruits like mango and coconut are generally larger compared to the smaller-sized Specimen P okra fruit.
(iv) Drupe fruits in Specimen S are edible, while Specimen P is commonly cultivated for its edible pods.
(v) Drupe fruits usually contain a single large seed, while Specimen P has multiple seeds.
(vi) Specimen S is often used in various culinary dishes and beverages, whereas Specimen P is commonly used as a vegetable in cooking.
(2d)
(PICK TWO ONLY)
(i) Specimen Q is the mature ovary of a flowering plant that has undergone fertilization. This indicates that it has developed from the female reproductive organ of the plant and is therefore classified as a fruit.
(ii) Fruits are responsible for the dispersal of seeds. Specimen Q has the ability to produce seeds and is designed to be easily dispersed by wind water animals or other means.
(iii) Fruits provide protection to the developing seeds. Specimen Q as a caryopsis fruit surrounds and protects the seed within a hardened outer layer ensuring its safe development and eventual dispersal.
(iv) Fruits are rich in nutrients and provide a valuable food source. Specimen Q is a staple food crop and is consumed by humans and animals due to its high nutritional content.
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