JAMB - Biology (1987)

• 1

  The functions of endoplasmic reticulum is

  回答

  (B)

  intracellular transport of materials
• 2

  Which of the following features of euglena is found only in animals?

  回答

  (B)

  Flagellum
• 3

  An organism found on a bare rock surface has features of algae and fungi. The organism is

  回答

  (B)

  a lichen
• 4

  In a plant exhibiting alternation of generations, the diploid multicellular stage is known as

  回答

  (D)

  sporophyte
• 5

  A characteristic that distinguishes bryophytes from flowering plants is the

  回答

  (C)

  absence of vascular tisssues
• 6

  A good example of a diploblastic organism is 

  回答

  (B)

  hydra
• 7

  The function of the clitellum in the earthworm is to

  回答

  (D)

  secrete cocoon
• 8

  The crayfish is an arthropod because

  回答

  (D)

  its body is covered with an exoskeleton made of chitin
• 9

  The hypha of Rhizopus is said to be non septate because it

  回答

  (B)

  has no cross walls
• 10

  In most true ferns sporangia are grouped into

  回答

  (D)

  sari
• 11

  In the reproduction of mosses, water is essential because

  回答

  (C)

  the male ganetes must swim to fertilize the ovum
• 12

  In tapeworm, the two structure that run throughout the length of the body are the

  回答

  (A)

  nerve cord and excretory duct
• 13

  Which of the following is not a characteristics of snail?

  回答

  (B)

  Chitinous exoskeleton
• 14

  In the life history of butterfly, destruction of crops is caused by the

  回答

  (C)

  caterpillar
• 15

  The correct sequence of tissues in the anatomy of a young dicotyledonous stem from the inside to the outside is

  回答

  (C)

  pith, xylem, cambium, phloem, collenchyma, parenchyma and epidermis
• 16

  Secondary thickening is initiated in a dicotyledonous stem by the

  回答

  (D)

  cambium
• 17

  In demonstrating the importance of mineral elements in plants, the culture bottle must be darkened to

  回答

  (A)

  prevent alga growth in culture solution
• 18

  The vitamin which is important in the formation of the retina pigment is

  回答

  (A)

  vitamin A
• 19

  Which of the following lists of organs is directly involved in nutrition?

  回答

  (D)

  Salivary gland, liver, stomach, villi and colon
• 20

  In the standard experiment to show that oxygen is given off during photosynthesis, sodium bicarbonate is used to

  回答

  (C)

  supply carbondioxide for photosynthesis
• 21

  One cubic centimeter of lymph is richer than an equal volume of blood in

  回答

  (B)

  leucocytes
• 22

  The oxidative part of the respiratory process takes place in the

  回答

  (A)

  mitochondria
• 23

  Fatigue of leg muscles may occur after riding many kilometers on a bicycle because of

  回答

  (D)

  insufficient oxygen
• 24

  The function of the loop of Henle is to

  回答

  (C)

  concentrate sodium chloride in the medulla of the kidney
• 25

  Sclerenchyma cells are lignified to

  回答

  (A)

  strengthen and support the plant
• 26

  The pineapple fruit is best described as

  回答

  (C)

  multiple, succulent and indehiscent
• 27

  A flower showing radial symmetry is said to be

  回答

  (D)

  actinomorphic
• 28

  A samara differs from a cypsela by having

  回答

  (A)

  an extended pericarp
• 29

  The plantain reproduces asexually by

  回答

  (A)

  suckers
• 30

  Growth can best be determined in a population of Spirogyra by measuring the

  回答

  (A)

  total length of the filament
• 31

  Most cells in higher animals retain their power of division EXCEPT

  回答

  (B)

  nerve cells
• 32

  A severe deficiency of thyroxin results in

  回答

  (C)

  cretinism
• 33

  The growth of a coleoptile towards unilateral light source is due to

  回答

  (B)

  unequal distribution of auxin
• 34

  The sequence of ear ossicles from the fenestra ovalis is

  回答

  (C)

  stapes, incus and malleus
• 35

  The center for controlling body temperature in the brains is the

  回答

  (D)

  hypothalamus
• 36

  Unlike auxins, gibberellins

  回答

  (B)

  do not affect leaf and fruit abscission
• 37

  A gene which expresses itself only in the homozygous condition is

  回答

  (C)

  recessive
• 38

  An example of monohybride inheritance in man is

  回答

  (D)

  albinism
• 39

  If a plant homozygous for round and yellow (RR : YY), is crossed with a wrinkle green type (rr : yy) all of the resulting seeds will be

  回答

  (B)

  round and yellow
• 40

  The ratio of carriers to sicklers in the F₁ generation derived from a parental cross of two carriers of haemoglobin S gene is

  回答

  (C)

  2 : 1
• 41

  In which of the following crosses will all the female offspring be colour blind?

  回答

  (A)

  colour blind mother x colour blind father
• 42

  Which of the following relates to edaphic factors?

  回答

  (D)

  The influence of soils on plant and animals
• 43

  Epiphytes growing on the branches of trees provide an example of the relationship known as

  回答

  (B)

  commensalism
• 44

  Poliomyelitis is an infectious diseases caused by

  回答

  (A)

  virus
• 45

  One of the functions of UNICEF is to

  回答

  (C)

  improve the health and nutrition of children and nursing mothers