Plastids differ from mitochondria on the basis of which of the following features ? (A) Presence of two layers of membrane (B) Presence of ribosome (C) Presence of thylakodis (D) Presence of DNA
Answer
Answer: C Thylakoids are present in the chloroplasts (plastids) and absent in mitochondria. Hence, mitochondria cannot take part in converting light energy to chemical energy.
Select the correct pair out of the following (A) Hypostomatic leaf-dicots (B) epistomatic leaf-monocots (C) amphistomatic leaf-free-floating hydrophytes (D) presence of sunken stomata in leaf-submerged hydrophytes
Carrier ions like \({N}{a}^{{+}}\) faciltate the absorption of substance like (A) amino acids, and glucose (B) glucose and fatty acids (C) fatty acids and glycerol (D) fructose and some amino acids.
Persistet nucellus is called as______________and is found in __________. (A) perispern, black pepper (B) perisperm, groundnut (C) endosperm, black pepper (D) endosperm,groundnut
The type of muscle present in our (A) heart is involuntary and unstirated smooth (B) intestine is striated and involuntary (C) thigh is striated and voluntary (D) upper arm is smooth muscle and fusiform in
Which one of the following microorganisms forms symbiotic assocation with plants and helps them in their nutrition? (A) Glomus (B) Azotobacter (C) Klebsiella (D) Azospirillum
In mice Y is the dominant allele for yellow fur and y is the recessive allele for grey fur. Since Y is lethal when homozygous, the result of cross \({Y}{y}\times{Y}{y}\) will be (A) 2 yellow : 1 grey (B) 2 yellow : 1 grey (C) 1 yellow : 1 grey (D) 1 yelloe : 2 grey