Tamil Nadu SSLC (Class 10) Transportation in Plants and Circulation in Animals — practice questions
33 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice Tamil Nadu SSLC (Class 10) Transportation in Plants and Circulation in Animals in the app →A process that moves molecules from a region where they are scarce to a region where they are already abundantIn a plant, water and dissolved minerals absorbed by the roots are carried to the leaves mainly through which Movement of water molecules across a semi-permeable membrane from a region of higher water concentration to a When a living plant cell is placed in a strongly hypertonic solution, the protoplasm shrinks and pulls away frDry seeds swell up after absorbing water, which lets the seedling push out of the soil. The type of diffusion Root hairs that absorb water and minerals from the soil are best described structurally as which of the followWater moving deeper into the root entirely through the cell walls and intercellular spaces, without ever crossIn the symplast pathway, water passes from one root cell to the next through fine cytoplasmic connections. TheThe evaporation of water from the aerial parts of a plant, mainly through the stomata of leaves, is known as wA stoma opens during the day because its guard cells change in a particular way. Which change directly causes As water evaporates from the leaves, a suction force develops that draws more water up the xylem column from tSince most soil minerals are charged ions that are less concentrated in soil than in the root, how do plants tPhloem carries food from a source to a sink, and the direction of this flow can be either upward or downward. Early-morning water droplets ooze from the leaf margins of grass through special pores when soil water is plenAbout 55% of human blood is made up of a slightly alkaline, non-cellular fluid that carries proteins, glucose,Mature mammalian red blood corpuscles lack a nucleus and cell organelles. Losing the mitochondria specificallyDuring a bacterial or viral infection, one type of agranulocyte responds by producing antibodies. Which white The largest of the leucocytes, amoeboid in shape and able to engulf bacteria by phagocytosis, is which cell tySmall, colourless blood cells without a nucleus that gather at an injury site to form a clot and stop blood loAmong all the blood vessels, which type carries deoxygenated blood even though its general class usually carriA blood vessel that is thin-walled, non-elastic, carries blood toward the heart and contains internal valves iIn an open type circulatory system, the blood pumped by the heart flows into body spaces rather than continuouThe human heart is enclosed in a double-walled sac containing a lubricating fluid that reduces friction duringThe left ventricle of the human heart has walls about three times thicker than the right ventricle. What is thThe valve located between the left auricle and the left ventricle has two cusps. By what name is this valve alThe circulation in which oxygenated blood travels from the left ventricle to the body organs and deoxygenated A specialised patch of muscle in the wall of the right atrium starts each heartbeat on its own, earning it theOne complete cardiac cycle lasts about 0.8 second. Within this cycle, the contraction of the ventricles (ventrThe first heart sound, 'LUBB', which is of longer duration, is produced at the start of ventricular systole byIn a healthy resting adult, blood pressure is normally expressed as 120 mm/80 mm Hg. The figure 80 mm Hg in thAn accident victim needs urgent transfusion but their blood group is unknown. The group whose donor can safelyA person with AB blood group is called a universal recipient. What feature of their plasma allows them to receThe colourless fluid that drains from intercellular spaces, resembles plasma but has fewer proteins, and carri