The fluid that circulates in the lymphatic system is called:
A. Plasma
B. Lymph
C. Tissue fluid
D. Serum
Answer: Option B
Solution (By JKSSB Mock Tests)
Lymph is the fluid within lymphatic vessels, derived from interstitial fluid that has entered lymph capillaries. It contains white blood cells, especially lymphocytes, and transports fats (as chyle) from the intestine. Plasma is blood fluid, serum is plasma without clotting factors, tissue fluid is interstitial.
Explanation:
Light reactions occur in the thylakoid membranes, where photosystems I and II, electron transport chains, and ATP synthase are located. Light energy is captured to produce ATP and NADPH and split water. The Calvin cycle (light-independent) occurs in the stroma.
Explanation:
Mitosis produces two genetically identical diploid daughter cells (clones) essential for growth, repair, and asexual reproduction. Meiosis involves pairing (synapsis) and crossing over during prophase I, and produces four genetically diverse haploid cells (gametes). The conservation of chromosome number and genetic identity is a hallmark of mitosis.
Explanation:
The Hardy-Weinberg equation is a fundamental principle in population genetics used to calculate the expected frequencies of genotypes in a population that is not evolving (in genetic equilibrium). 'p' represents the frequency of the dominant allele, and 'q' represents the frequency of the recessive allele. p^2 is the frequency of the homozygous dominant genotype, 2pq is the heterozygous genotype, and q^2 is the homozygous recessive genotype.
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