Question 1 of 20 2,572 total questions
If a dark-skinned woman (Bb) marries an albino man (bb) and they have four children, how many of the children will be dark-skinned?
What part of the central nervous system is concerned with answering an examination question
A Cerebrum
B Cerebellum
C Medulla oblongata
D Spinal cord
The main function of the choroid is
A protection of the eye ball
B transmission of light
C supply of nutrient to tissue of the eye
D converging light
The radicle of a bean seedling grows most rapidly in the region
A of the root tip
B just above the root tip
C just around the root tip
D just below the root tip
In a mammal, the placenta performs functions similar to those to the
A lungs kidneys and digestive system
B lungs, heart and nervous system
C liver, intestines and reproductive system
D intestine, heart and digestive system
Which of these plants groups are normally propagated by asexual means?
A Banana, yam, pineapple and cassava
B Yam, cassava, rubber and banana
C Yam, cassava, orange and banana
D Banana, cashew, coffee and pineapple
In vegetation propagation, which of the following requires part of another plant to develop?
A Scion
B Bulb
C Rhizome
D Sucker
Airspace are characteristic of seeds of fruits dispersed by
A birds
B water
C wind
D explosive mechanism
A dry dehiscent fruit which breaks up into one-seeded part is a
A schizocarp
B capsule
C follicle
D legume
Taxism differs from tropism because
A the whole organism is affected
B it is a directional movement
C it is a response to multi directional stimuli
D part of the organism is affected
Parenchyma cells are serves as supporting tissue when they
A contain chloroplast
B have crystals
C become flaccid
D become turgid
The skin, through the sweat glands, function as
A an excretory organ
B a respiratory organ
C a sensory organ
D a protective organ
In the kidney, the malpighian corpuscles is located in the
A medulla
B hilium
C cortex
D pelvis
The main waste products formed in plants are
A alkaloids tannins and resins
B water, alkaloids and carbondioxde
C oxygen, carbondioxide and alkaloids
D water, carbondioxide and oxygen
In the mammalian respiratory system, exchange of gases occurs in the
A lungs
B bronchi
C bronchioles
D alveoli
If the phloem of a healthy plant is killed by heat treatment the
A the upward movement of salt will cease
B food manufactured in the leaves will accumulate
C whole plant will die immediately
D leaves of the plant will become yellow
Which of the following will be first digested if ingested at the same time?
A Cooked beans
B Cooked rice
C cod liver oil
D Roasted beef
If the gall bladder of a mammal is damaged, which of the following will be most seriously affected?
A Glycolysis
B Digestion of starch
C Digestion of fats and oil
D Digestion of proteins
If an animal has diastema, it would NOT posses
A incissors
B cannines
C premolars
D molars
In the transverse section of the leaf of maize vascular bundles are arranged in
A a row
B one circle
C alternate position
D two circles
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