Biology Past Questions And Answers
Your neighbor has a flower garden in which there are red flowers and white flowers. These flowers are diploid organisms, and flower color is an autosomal trait. The gene for red flowers (R) is dominant, while the gene for white flowers (r) is recessive. Which of the following is the genotype of a white flower?
- A. RR
- B. Rr
- C. rr
- D. R
Seed plants are divided into
- A. trachephytes and ferns
- B. angiosperms and gymonsperms
- C. monocotyledons and dicotyledons
- D. thallophytes and bryophytes
(a) State five reasons why animals move from place to place.
(b) State one function each of the following structures found in plants:
(i) epidermis
(ii) phloem
(iii) sclerenchyma.
(c) Give two examples each of the following types of organisms:
(i) parasitic plants
(ii) saprophytes.
(d) State two adaptive features of plants which inhabit salt water swamp.
(e) State two factors each which result in
(i) increase
(ii) decrease, in population density.
(f) Mention four ways in which modern agricultural activities may threaten the survival of species.
(g) State three reasons why mitosis is important to living organisms
(h) State three causes of food spoilage.
View Discussion (0)WAEC 2014 THEORYAn example of an organ of perennation in plants is
- A. rhizome
- B. seed
- C. petal of a flower
- D. calyx of flower
A population which exceeds its carrying capacity and then collapses is represented graphically by a
- A. bell-shaped curve
- B. linear curve
- C. sigmoid curve
- D. skewed curve
The urinary tubules of the kidney function through
- A. osmosis and diffusion
- B. active transport and osmosis
- C. ultrfiltration and selective reabsorption
- D. active transport and cytoplasmic streaming
The endoplast cells found in hydra are used for
- A. reproduction
- B. offence and defence
- C. locomotion and nutrition
- D. food collection
Which of the following statements is not correct about the functions of each group of mammalian vertebrae?
- A. Cervical vertebrae support the neck
- B. Thoracic vertebrae articulate with the ribs
- C. Lumbar vertebrae provide attachment for abdominal muscles
- D. Sacral vertebrae support the skull and allow nodding and rotating movements
Scientists who study genetics are known as
- A. genealogist
- B. geneticist
- C. mendalists
- D. genescientists
Which of the following relationships illustrates competition?
- A. Cattle egret moving along with cattle
- B. Goats and cows grazing on a small grass lawn
- C. Mosses succeeding lichens in a rocky terrain
- D. Red mangrove swamp dying and replaced by white mangrove