1. The internal hydrostatic pressure in plants is known as:a. Turgor pressureb. Rigid pressurec. Essential pressured. Turbid pressureAnswer: a. Turgor pressure 2. Movement in plants occurs in response to the stimulus of light is known as:a. Photolysisb. Phototropismc. Phototaxisd. PhotonastyAnswer: c. Phototaxis 3. Movement due to external stimuli is known as…?a. Autonomic movementsb. Paratonic movementsc. … Read more
1. Who proposed a mechanism for evolution, which he termed Natural Selection?a. Mendelb. Darwinc. Heisenbergd. ChattonAnswer: b. Darwin 2. Which organs are functionally different but structurally alike?a. Vestigial organsb. Analogous organsc. Homologous organsd. Developed organsAnswer: c. Homologous organs 3. The innate tendency of offspring to resemble their parents is known as…?a. Variationb. Heredityc. Inheritanced. ResemblanceAnswer: … Read more
1. Which of the following explains all the events in muscle contraction?a. Lock and key modelb. Sliding filament modelc. Evolutionary historiesd. Cytoplasmic approachAnswer: b. Sliding filament model 2. Who proposed the “Sliding filament theory” for muscle contraction in 1954?a. James Spudichb. Hugh Huxley and Jean Hansonc. Corid. Watson and CrickAnswer: b. Hugh Huxley and Jean … Read more
1. In older woody tissue; the gaseous exchange takes place through:a. Stomatab. Aerenchymac. Lenticelsd. HydathodesAnswer: c. Lenticels 2. Who is known as the father of Plant anatomy?a. Aristotleb. Robert Brownc. Nehemiah Grewd. Carl LinnaeusAnswer: c. Nehemiah Grew 3. Bordered pits are found in:a. Sieve cellsb. Vessel wallc. Companion cellsd. Sieve tube wallAnswer: b. Vessel wall … Read more
1. First phylogenetic system of plant classification was given by…?a. Hutchinsonb. Bentham and Hookerc. Eichlerd. Engler and PrantlAnswer: c. Eichler 2. Engler and Prantl published a phylogenetic system in the monograph:a. Historia Plantarumb. Origin of speciesc. Genera Plantarumd. Die Naturlichen Pflanzen FamilienAnswer: d. Die Naturlichen Pflanzen Familien 3. When R.H. Whittaker an American taxonomist purposed … Read more
1. The most important component of oral contraceptive pills is…?a. Progesteroneb. Growth hormonec. Thyroxined. Luteinizing hormoneAnswer: a. Progesterone 2. What is the term used to describe a medical procedure that involves removing a small sample of tissue from the cervix to check for abnormal cells, which could potentially lead to cervical cancer?a. Vasectomyb. Hysterectomyc. Colposcopyd. … Read more
1. Cell biology began with the discovery of the cell in 1665 by:a. Loren Okenb. Robert Brownc. Robert Hooked. SchleidenAnswer: c. Robert Hooke 2. What is the work performed by Schleiden in cell biology?a. Write Micrographiab. Cell Theoryc. Discovered celld. Discovered nucleusAnswer: b. Cell Theory 3. How many basic components of a cell are there?a. … Read more
1. Which of the following variety of crops is developed by hybridisation and selection for disease resistance against rust pathogens? Hint: Himgiria. Maizeb. Sugarcanec. Wheatd. ChilliAnswer: c. Wheat 2. The Green Revolution or the Third Agricultural Revolution in 1960; increased the agriculture production in…?a. Indiab. Mexicoc. Chinad. All over the worldAnswer: d. All over the … Read more
1. What is the function of sepals and petals?a. To provide foodb. Help in pollinationc. Release pollensd. Protect the stamens and carpelsAnswer: d. Protect the stamens and carpels 2. Which of the following male gametophyte produces gamete?a. Ovuleb. Microsporec. Nucellusd. IntegumentAnswer: b. Microspore 3. Where does pollen grain germinates to form a pollen tube?a. Ovaryb. … Read more
1. Which of the following is used for blood clotting during surgery?a. Streptomycinb. Antithrombin IIIc. Insulind. CaroteneAnswer: b. Antithrombin III 2. Which of the following is present in the gut of cows and buffaloes and responsible for the production of methane?a. Methanogensb. Cyanobacteriac. Fucus sp.d. Chlorella sp.Answer: a. Methanogens 3. Which of the following fungi … Read more