Biology Past Questions And Answers
If water that has been coloured red is poured at the base of a wilting plant, it will appear as a red stain in the cells of the
- A. xylem
- B. epidermis
- C. phloem
- D. parenchyma
Each person can have one of four possible blood types: A, B, AB, or O. Blood type A means that the A antigen is present on the red blood cell surface. Blood type B means that the B antigen is present on red blood cells' surfaces. Blood type AB means that both the A antigen and the B antigen are present on the red blood cells' surfaces. Blood type O means that no antigens are present on the red blood cells' surfaces. Someone with genotype A/A or A/O will have type A blood. Someone with genotype B/B or B/O will have type B blood. Someone with genotype A/B will have AB blood, and someone with genotype O/O will have type O blood. Assume that blood type is not a sex-linked trait. A mother with genotype A/O and a father with genotype A/B could NOT have a child with which blood type?
- A. A
- B. B
- C. O
- D. Not enough information
One of the similarities between algae and mosses is their possession of
- A. chlorophyll
- B. stem
- C. leaves
- D. roots
Which of the following activities is not necessary in population sampling?
- A. Selecting the habitat
- B. Dividing the selected habitat into portions
- C. Throwing the quadrat randomly
- D. Feeding the organisms
The organism with spiral chloroplasts and nucleus suspended by cytoplasmic strands is
- A. Volvox
- B. Spirogyra
- C. Paramecium
- D. Euglena
After a heavy rainfall and the formation of a large pond, the most likely sequence of changes in the vegetation of the pond is
- A. Euglena → water lily → Spirogyra → grass
- B. water lily → Spirogyra →grass → Euglena
- C. Spirogyra → Euglena → grass → water lily
- D. Euglena → Spirogyra → water lily → grass
In the honey bee colony, the drones are
- A) sterile males with reduced mouth parts
- B) sterile males with well-developed mouth parts
- C) fertile males with reduced mouth parts
- D) fertile males with well developed mouth parts
Non seed plants are found in
- A) desert and arctic regions only
- B) all environments
- C) cold mountain areas and hot springs
- D) tropical and subtropical regions only
The end product of the digestion of carbohydrate is?
- A. amino acid
- B. glycerol
- C. glucose
- D. sucrose
Two plants with red flowers were back crossed, which of the following results indicate that the plants are heterozygous red flowers, where red flowers are dominant?
- A. 75% red and 25% white
- B. 50% red and 50% white
- C. 100% white
- D. 100% red