Life Processes
(Assignment Q & A)
Structure Of Leaf credits: Zephrys, under CCAS 3.0, Wikimedia Commons |
Q1. Where are chloroplasts present in the leaf?
Answer: Below the epidermis, there are layers of palisade cells that contain chloroplasts.
Q2. Name the pigments that can absorb solar energy. Also, name the enzyme required for photosynthesis.
Answer: Chlorophyll. RuBisCo (Ribulose-1,5-bisphosphate carboxylase/oxygenase), a protein enzyme is required to initiate photosynthesis.
(Note: RuBisCo is the most abundant protein in the world due to its presence in green plants.)
Q3. Name one organism each having saprophytic parasitic and holozoic nutrition.
Answer:
Saprophytic: Mushroom, yeast
Parasitic: Cuscutta (Dodder plant), Ring Worm, Leech
Holozoic: Human, amoeba
Q4. Enlist two functions of the bile juice of the liver.
Answer:
1. Bile neutralises the acidic medium of food coming from the stomach and makes it alkaline.
2. It breaks the large fat globules into smaller ones, this increases the enzyme action.