Q.54 Which of the following best represents the flow of energy through an ecosystem?(A) Producers –> Primary consumers –>Secondary consumers(B) Sun –>Producers –>Secondary consumers –>Primary consumers(C) Sun –>Producers –>Primary consumers –>Secondary consumers(D) […]
Q.53 Carbon dioxide and other ‘greenhouse gases’ act by(A) destroying ozone in the stratosphere(B) trapping heat in the earth’s atmosphere(C) allowing more visible light to reach the earth’s surface(D) reducing the […]
Q.52 Which one of the following is a free-living photosynthetic nitrogen fixer?(A) Frankia (B) Clostridium (C) Rhodospirillum (D) Rhizobium Rhodospirillum is the free-living photosynthetic nitrogen fixer among the options. Question Breakdown […]
Q.51 Which one of the following performs normal C3 photosynthesis when water is available, butswitches to crassulacean acid metabolism (CAM) during salt or drought stress?(A) Mesembryanthemum crystallinum (B) Cynodon dactylon(C) Eleucine […]
Q.50 The number of nucleosomes present in a 30 nm solenoid structure of a chromatin is (A) 2 (B) 4 (C) 6 (D) 8 30 nm Solenoid Chromatin Nucleosomes Chromatin […]
Q.49 Cytoplasmic male sterility via the chloroplast genome can be induced by the expression of Pha A gene encoding (A) β-Ketothiolase (B) Acetoacetyl CoA carboxylase (C) Acetoacetyl CoA reductase (D) […]
Q.48 Parenchyma cells associated with sieve tube members are called (A) Albuminous cells (B) Companion cells (C) Bulliform cells (D) Subsidiary cells Parenchyma Cells Sieve Tube Members In plant anatomy, parenchyma […]
Q.47 An estimate of phylogenetic relationships among the taxa is commonly represented in the form of a (A) Cladogram (B) Idiogram (C) Phenogram (D) Dendrogram Here’s a SEO-optimized article on […]
Q.46 The swollen base of a petiole is known as (A) Ligule (B) Hastule (C) Pulvinus (D) Stipule Swollen Base of Petiole: Pulvinus in Plant Anatomy The swollen base of […]
Q.45 The figure below is a schematic of a linear double stranded DNA containing the indicated restriction sites. The DNA was completely digested with PvuII and EcoRI. The products were […]
