1. Leaving Certificate Biology Biology General Knowledge 4 iQuiz
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2. Dilation of the pupil of the eye is brought about by …
Excessive wind
The iris
The lens
The choroid

3. A solution with a lower solute concentration than the surrounding solution is known as what type of solution?
Isotonic
Hypotonic
Hypertonic
Isotopic

4. Blood returns to the heart from the lungs in what blood vessel?
Aorta
Vena cava
Pulmonary artery
Pulmonary vein

5. The growth response of part of a plant towards an external unidirectional stimulus is a …
Positive tropism
Geotropism
Negative tropism
Hydrotropism

6. The oxygen needed by aerobic organisms comes from which of the following processes?
Respiration
Glycolysis
Chemosynthesis
Photosynthesis

7. During the formation of base pairs in DNA adenine always bonds with …
Guanine
Thymine
Uracil
Cytosine

8. Chicken pox is a disease caused by a …
Virus
Bacteria
Fungus
An infection

9. At night green plants excrete …
Hydrogen
Carbon dioxide
Oxygen
Nitrogen

10. The basic structural part of a fungus is a …
Cell
Mycelium
Hypha
Zoospore

11. In which organ does menstruation occur?
Kidney
Liver
Uterus
Leaf

12. Bacteria can survive unfavourable conditions by …
Binary fission
Forming
endospores
Forming flagella
Undergoing
meiosis

13. What substance is excreted during bacterial denitrification?
Urea
Nitrogen
Oxygen
Carbon dioxide

14. Which of the following is not involved in protein synthesis?
DNA
mRNA
Chloroplast
tRNA

15. The temperature of a bird is higher than that of a man
The temperature of a bird is higher than that of a man. If a bird moved from a temperature of 24 °C to one of 29 °C, what would its temperature be in the second place?
24 °C
29 °C
37 °C
None of these

16. Name the type of cell! Elongated, placed end to end, separated by a perforated cell plate so that the cytoplasm of one cell is continuous with the cytoplasm of the adjoining cell.
Xylem tracheids
Phloem sieve tube
Xylem vessel
Companion cell

17. Biology General Knowledge 4 iQuiz
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