Water Uptake
Muhtasari
All the water a plant uses, for photosynthesis, for support and for cooling, starts its journey in the soil and enters through the roots. The entry point is a special cell built for the job: the root hair cell, whose long thin extension reaches between soil particles to drink in water.
In this lesson you will learn how root hair cells are adapted, follow the exact pathway water takes from soil to leaf, and meet a simple staining experiment that lets you see that pathway for yourself. You will also use magnification to work out the real size of a root hair cell from an image.
Malengo
- Identify in diagrams and images root hair cells and state their functions
- State that the large surface area of root hairs increases the uptake of water and mineral ions
- Outline the pathway taken by water through the root, stem and leaf as: root hair cells, root cortex cells, xylem, mesophyll cells
- Investigate, using a suitable stain, the pathway of water through the above-ground parts of a plant
Maelezo ya Somo
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Tathmini ya Somo
Hongera kwa kukamilisha somo la Water Uptake. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- Root hair cells are adapted for absorbing water mainly because they have a: A. thick waxy cuticle B. large surface area C. store of starch D. green colour Answer: B
- Water is absorbed into a root hair cell by: A. active transport B. respiration C. osmosis D. transpiration Answer: C
- The correct pathway of water through a plant is: A. xylem, root hair cells, cortex, mesophyll B. root hair cells, root cortex cells, xylem, mesophyll cells C. mesophyll, xylem, cortex, root hairs D. root hairs, xylem, mesophyll, cortex Answer: B
- An image of a cell is 40 mm long and the cell is actually 2 mm long. The magnification is: A. x2 B. x20 C. x40 D. x80 Answer: B
- Mineral ions are taken into root hair cells by: A. osmosis B. active transport C. transpiration D. diffusion only Answer: B
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Vitabu Vinavyopendekezwa
Fanya Mazoezi ya Maswali ya Majaribio
Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu Water Uptake? Pakua programu ya Green Bridge CBT ili kupata maswali ya majaribio na tathmini kamili za mazoezi kuhusu mada hii.
Pakua Programu Kwenye Google Playstore
Kila kitu unachohitaji ili kufaulu katika JAMB, WAEC & NECO.
