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- Which of the following adaptations allowed plants to grow in drier environment but without much water loss form its tissue? O A. Plant meristem tissue B. Plant alkaloids OC. Plant cuticle O D. Plant flavonoids17. The atria contracts a. just before diastole b. during diastole c. right after systole d. during systole 18. Which statement is true about transport in plants? a. Water is transported by the xylem in upward and downward directions. b. Sugars manufactured in the leaves are transported through the phloem by tension cohesion mechanism. c. Sugars always move from source to sink, in an upward direction. d. Sugars always move from sink to source, in a downward direction. e. Sugars are transported from source to sink, in any direction. 19. A rhythmic beating of cardiac muscle in a mammalian heart is initiated by the a. Atrioventricular node b. Purkinje fibers c. Parasympathetic nervous system d. Sinoatrial nodeChoose the one answer that fits best. Which of the following statements regarding seed germination is NOT correct? O a. The first structure to emerge is the root O b. The root grows away from the light or down O c. Seeds can always germinate no matter what temperature and light conditions are d. There is no photosynthesis until green leaves emerge e. Enzymes inside the embryo break down nutrients during germination
- Which of the following statements about gravity perception is FALSE? A. Statoliths are specialized amyloplasts B. Statoliths are found in statocytes C. Gravity is sensed from the root cap acropetally through the zone of division D. Columella cells sense gravity through statolith pressure on the endoplasmic reticulum E. Auxin is the main hormone involved in gravity responseYou were comparing two plants A and B: plant A has hyphal association in its roots and plant B lacks hyphal association in its roots. Which of the following is correct regarding the aforementioned scenario? O a. Both plants will have the same heights and number of leaves Ob. Plant Agrows faster than plant B because it gets more organic matter from soil O. Plant Agrows faster than plant B because it has more roots than plant B Od. Plant A grows faster than plant B because it gets more minerals from soil Oe Plant Agrows faster because it is exposed to more sunlight than plant BThe electrochemical gradient is __________________. A. The total chemical potential gradient B. The total electrical potential gradient C. All the above Water and mineral nutrients are transported from root to shoot via __________________ A. Plasmodesmata B. Xylem C. Phloem D. Cell wall
- The structure of the C4 leaf shows a. how mesophyll cells hug the epidermis of the leaf. hug the bundle sheath cells. b. C. they are spikey. how there are stomata on the underside of the leaf. they store water. TOU O b Oc O e dPlants absorb most part of water needed by them through their: A. embryonic zone B. growing point C. root hairs D. zone of elongationThe turgor loss point of a leaf is equal to:a. the osmotic potential when the pressure potential equals 0b. the pressure potential when the osmotic potential of the leaf cells are at full turgorc. 0d. the water potential when the osmotic potential equals 0
- Which of the following statement is NOT TRUE about plants? Lütfen birini seçin: O a. A plant can grow throughout its life; this is called indeterminate growth O b. Plants are the only organism capable of photosynthesis O c. Fruits in plants protect seeds and aid in seed dispersal O d. The plant body is divided into a root system and a shoot system, connected by vascular tissue that is continuous throughout the plant O e. the transfer of pollen from anther to stigma is called pollinationPlants produce a wide variety of chemicals that are used in medicines. What is the function of these compounds in the plants? Select one: a. Attract pollinators to fertilize seeds O b. Assist in transport of water between tissues O c. Defend the plant against herbivores O d. Attract insects and birds to spread seeds and fruits e. Function is unknown in these plantsTida made a sketch of a plant in her bedroom, similar to the one shown below. She keeps the plant near a sunnywindowsill. Tida wants to investigate how the plant will respond if she turns it 180 degrees, or one half circle. She turnsthe plant and observes it two days later. a Most of the plant's leaves will be facing side B. b The plant's top leaves will droop downward. c The plant will lose more leaves on side A. d The plant's leaves will be evenly distributed between sides A and B.
