A gas has a volume of 200 cm³ at 1 atm. What will its volume be at 2 atm (temperature constant)?

• 100 cm³

• 400 cm³

• 300 cm³

• 50 cm³

According to Charles’ Law, when the temperature of a gas increases (at constant pressure), what happens to its volume?

• Decreases

• Increases

• Remains constant

• Becomes zero

The shedding of leaves in plants is called ____.

• Transpiration

• Senescence

• Abscission

• Abscisic

True fruit is formed from the ____.

• Ovary

• Ovary and ovule

• Ovule

• Seed

Yam mosaic disease is caused by ____.

• Fungus

• Virus

• Bacteria

• Protozoa

The functional unit of the kidney is ____.

• Glomerulus

• Nephron

• Tubule

• Medulla

The powerhouse of the cell is the ____.

• Ribosome

• Chloroplast

• Mitochondrion

• Nucleus

Which of the following is a vector of malaria?

• Tsetse fly

• Housefly

• Female Anopheles mosquito

• Blackfly

The mode of nutrition in fungi is ____.

• Autotrophic

• Heterotrophic

• Holophytic

• Photosynthetic

Which of these is a mollusc?

• Spider

• Snail

• Centipede

• Cockroach