Placentation in fruits is referred to as the
- A. arrangement of ovules in the ovary of a flower
- B. part of the ovary where the ovules originate and remain till maturity
- C. ovules borne on a central column of tissues in an ovary
- D. formation of a single carpel joined at the two edges of an ovule
Study the list of organisms below and use them to answer the questions.
I-Hydra
II-Owl
III-Snake
IV-Snail
The Phylum of the organism labeled IV is
- A. Platyhelminthes
- B. mollusca
- C. Arthropoda
- D. Coelenterata
Study the list of organisms below and use them to answer the questions.
I-Hydra
II-Owl
III-Snake
IV-Snail
The arrangement of the organisms in order of increasing complexity is
- A. II-III-I-IV
- B. I-IV-III - II
- C. I-II-III-IV
- D. IV-III-II - I.
The diagram below is an illustration of a structure in the skeletal system of humans. Study it and answer the question
An individual was involved in a car accident and the illustrated structure was badly injured. Which of the following structures would most likely be affected?
- A. Clavicle, tongue and pelvis
- B. Eye, cerebellum and ear
- C. Ear, brain and hinge joint
- D. Lumbar, eye and teeth
The diagram above is an illustration of a structure in the skeletal system of humans. Study it and answer the question
the illustrated structure is a part of the
- A. appendicular skeleton
- B. axial skeleton
- C. axis vertebrae
- D. cervical vertebrae
Which of the following soil types have a high capillarity?
- A. Sand and clay
- B. loam and sand
- C. silt and sand
- D. silt and clay
The diagrams below are illustrations of organisms in a habitat. Study them and answer the question, the producer in the diagram is
- A. IV because it is the largest organism in the diagram
- B. IV because it is the organism that receives the highest amount of sunlight
- C. I because it uses sunlight to manufacture food
- D. I because it contains the least amount of energy
The diagrams below are illustrations of organisms in a habitat. Study them and answer the question,
The feeding relationship between the organisms labelled III and IV in the diagrams is
- A. predation
- B. mutualism
- C. parasitism
- D. saprophytism
Which of the following organisms would be the producer in a food chain?
- A. Goat
- B. maize
- C. man
- D. bacterium
The rate of decomposition of dead organisms is faster in the tropical rainforest than in other biomes because
- A. of consistent cool temperature
- B. of availability of moisture
- C. of the relatively constant day light.
- D. there are more plants
Which of the following hormones is wrongly paired with its secretory organ?
- A. oestrogen and ovary
- B. Oxytocin and hypothalamus
- C. adrenalin and kidney
- D. insulin and pancreas
A Rhesus negative woman may experience stillbirth of the second child that is Rhesus positive because
- A. the foetus is deprived of nourishment
- B. they have poor circulatory system
- C. the blood of the foetus might clump
- D. the woman is susceptible to diseases during pregnancy
Which of the following factors is the main problem facing xerophytes?
- A. Conservation of excess water
- B. competition for sunlight
- C. lack of adequate water
- D. formation of poor roots
Which of the following instruments is not used in measuring abiotic factors in a habitat?
- A. microscope
- B. Wind vane
- C. thermometer
- D. hygrometer
A vestigial structure in humans is
- A. earlobe
- B. gallbladder
- C. tailbone
- D. villus
What is the probability that a pregnancy would result in a male child?
- A. \(\frac{3}{4}\)
- B. \(\frac{1}{2}\)
- C. 1
- D. \(\frac{1}{4}\)
The mouthparts of a grasshopper are adapted for
- A. sucking
- B. chewing
- C. grinding
- D. absorption
A group of organisms belonging to different species that coexist in the same habitat and interact is referred to as
- A. community
- B. biosphere
- C. niche
- D. population
The diagram below is an illustration of a mango leaf drawn by a student in a Biology test. The student failed the test. Study it and answer the question.
which features of the diagram would have earned the student more marks if shown
- A. colour and size
- B. spelling of label and length of midrib
- C. habitat and agricultural qualities of leaf
- D. title and margin
The diagram above is an illustration of a mango leaf drawn by a student in a Biology test. The student failed the test. Study it and answer the question.
The likely reason why the student failed the test was that the
- A. labels were wrong and the guidelines were not touching the structures
- B. net venation shown were few, rough, not properly drawn and wrongly placed
- C. leaf venation should have been parallel and the midrib should be thicker
- D. leaf was too tapered at the apex, the leaf stalk was too short and the shape of leaf was wrong.
The structure that its action could result in choking when talking and eating at the same time is
- A. oesophagus
- B. epiglottis
- C. oesophagus
- D. liver