Usman

Tag: category-60

  • Most plants are autotrophs, which means they:

    {“lesson_id”:0,”category_id”:60,”topic”:”Introduction To Plant”,”choices”:[“Never use carbon dioxide”,”Make organic food using light (photosynthesis)”,”Ingest animals”,”Absorb only ready-made sugar from soil”],”correct”:1,”type”:”mcq”,”explain”:”Green plants fix CO2 into sugars using light energy.”}

  • A typical plant cell wall is rich in:

    {“lesson_id”:0,”category_id”:60,”topic”:”Introduction To Plant”,”choices”:[“Cellulose”,”Chitin only”,”Keratin”,”Peptidoglycan”],”correct”:0,”type”:”mcq”,”explain”:”Cellulose microfibrils strengthen plant cell walls; fungal walls use chitin.”}

  • The organelle that performs photosynthesis is the:

    {“lesson_id”:0,”category_id”:60,”topic”:”Introduction To Plant”,”choices”:[“Mitochondrion”,”Chloroplast”,”Centriole”,”Lysosome”],”correct”:1,”type”:”mcq”,”explain”:”Chloroplasts contain chlorophyll and the photosynthetic machinery.”}

  • Unlike most animals, plants typically:

    {“lesson_id”:0,”category_id”:60,”topic”:”Introduction To Plant”,”choices”:[“Are sessile and grow throughout life at meristems”,”Lack cell walls”,”Have no DNA”,”Cannot reproduce”],”correct”:0,”type”:”mcq”,”explain”:”Modular, indeterminate growth from meristems is a plant hallmark.”}

  • The two multicellular phases in a typical plant life cycle are:

    {“lesson_id”:0,”category_id”:60,”topic”:”Introduction To Plant”,”choices”:[“Larva and pupa”,”Egg and sperm only”,”Sporophyte and gametophyte”,”Polyp and medusa”],”correct”:2,”type”:”mcq”,”explain”:”Plants show alternation of generations: a diploid sporophyte and a haploid gametophyte.”}

  • Vascular plants are distinguished by:

    {“lesson_id”:0,”category_id”:60,”topic”:”Introduction To Plant”,”choices”:[“Having no embryos”,”Xylem and phloem for long-distance transport”,”Living only in boiling springs”,”Complete absence of chlorophyll”],”correct”:1,”type”:”mcq”,”explain”:”Vascular tissues allow large body size on land.”}

  • Plants store most carbohydrate as:

    {“lesson_id”:0,”category_id”:60,”topic”:”Introduction To Plant”,”choices”:[“Starch”,”Glycogen in liver”,”Chitin granules”,”Urea”],”correct”:0,”type”:”mcq”,”explain”:”Starch in plastids is the usual plant storage polysaccharide.”}

  • True or false: Plant cells generally have a large central vacuole.

    {“lesson_id”:0,”category_id”:60,”topic”:”Introduction To Plant”,”choices”:[“True”,”False”],”correct”:0,”type”:”true_false”,”explain”:”The vacuole stores water and solutes and helps keep cells turgid.”}