MCQ
Polydelphous stamen found in .............
- ✓Lemon
- BChina rose
- CPea
- DSoyabean
✓
Answer
Correct option: A.
Lemon
a
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Identify the components labelled $A, B, C$ and $D$ in the diagram below from the list $(i)$ to $(viii)$ given along with
→Components:
$(i)$ Cristae of mitochondria
$(ii)$ Inner membrane of mitochondria
$(iii)$ Cytoplasm
$(iv)$ Smooth endoplasmic reticulum
$(v)$ Rough endoplasmic reticulum
$(vi)$ Mitochondrial matrix
$(vii)$ Cell vacuole
$(viii)$ NucleusThe correct components are:
Which of the following options has all the organisms belonging to the same Genus?
Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres.
What is not true about cell cycle?
$a$. During $G_1$ phase there is active synthesis of $RNA$ and proteins but no change in its $DNA$ content
$b$. In synthesis or $S$ phase, each chromosome carries a duplicate set of genes
$c$. During $G_2$ phase, a cell contains double the amount $(4C)$ of $DNA$ present in the original diploid cell $(2C)$
$d$. In $S$-phase a cell doubles the original diploid $(2n)$ chromosome number
→$a$. During $G_1$ phase there is active synthesis of $RNA$ and proteins but no change in its $DNA$ content
$b$. In synthesis or $S$ phase, each chromosome carries a duplicate set of genes
$c$. During $G_2$ phase, a cell contains double the amount $(4C)$ of $DNA$ present in the original diploid cell $(2C)$
$d$. In $S$-phase a cell doubles the original diploid $(2n)$ chromosome number
Which one of the following statements are correct ?
(i) Collagen is the most abundant protein in plant world and RuBisCo in the whole biosphere.
(ii) Cellulose is a homo polymer.
(iii) Inulin is a polymer of Fructose.
(iv) In polysaccharides chain, the left end is called reducing end and Right end is called nonreducing end.
(v) The starch-I is blue in colour.
(vi) Plant cell walls are made of cellulose polysaccharide,
(vii) Paper made from plant pulp and cotton fibre contains cellulose polysaccharide mainly.
(viii) Adenine and guanine nitrogenous bases constitute pyrimidine.
(ix) A nucleic acid containing deoxyribose is called DNA while that which contain ribose is called RNA.
(x) Secondary structure of protein is the sequence of amino acids in it.
(xi) In protein, the first amino acid is also called as N-terminal amino acid and last amino acid is called the C-terminal amino acid.
(xii) In proteins, only left handed helices are observed.
Choose the correct option given below :-
(i) Collagen is the most abundant protein in plant world and RuBisCo in the whole biosphere.
(ii) Cellulose is a homo polymer.
(iii) Inulin is a polymer of Fructose.
(iv) In polysaccharides chain, the left end is called reducing end and Right end is called nonreducing end.
(v) The starch-I is blue in colour.
(vi) Plant cell walls are made of cellulose polysaccharide,
(vii) Paper made from plant pulp and cotton fibre contains cellulose polysaccharide mainly.
(viii) Adenine and guanine nitrogenous bases constitute pyrimidine.
(ix) A nucleic acid containing deoxyribose is called DNA while that which contain ribose is called RNA.
(x) Secondary structure of protein is the sequence of amino acids in it.
(xi) In protein, the first amino acid is also called as N-terminal amino acid and last amino acid is called the C-terminal amino acid.
(xii) In proteins, only left handed helices are observed.
Choose the correct option given below :-
Which of the following is incorrect for windpollinated plants?
The $3'→ 5'$ phosphodiester linkages inside a polynucleotide chain serve to join
→The cells in the root and shoot apex regions are
The gaseous plant growth regulator is used in plants to :
Auxin herbicide is