Which of the following is a non-biodegradable pollutant?
A. Cotton cloth
B. Vegetable waste
C. Plastic
D. Paper
Answer: Option C
Solution (By JKSSB Mock Tests)
Plastics are synthetic polymers that resist microbial decomposition and persist in the environment for hundreds of years, causing pollution. Paper, cotton, and vegetable waste are biodegradable and broken down by decomposers.
Explanation:
In a chloroplast, the thylakoids are flattened membranous sacs that are arranged in stacks like coins, which are called grana (singular: granum). The stroma is the fluid-filled matrix surrounding the thylakoids. The thylakoid membranes contain the pigments necessary for the light reactions of photosynthesis.
Explanation:
Binary fission is a type of asexual reproduction in prokaryotes where the cell divides into two identical daughter cells after DNA replication. Mitosis and meiosis are eukaryotic. Budding occurs in yeast and some bacteria.
Explanation:
Gregor Mendel's experiments on pea plants led to the discovery of the fundamental laws of inheritance, earning him the title father of genetics.
No comments yet. Be the first to start the discussion!