Translocation
Akopọ
A leaf makes far more sugar than it can use, while a growing root or a swelling potato makes none at all. Getting food from where it is made to where it is needed is the job of translocation, the movement of sugar and amino acids through the phloem.
This is an Extended-tier topic. In this lesson you will learn exactly what translocation is, what 'sources' and 'sinks' mean, and why the very same part of a plant can switch from being a source to a sink at different times in its life.
Awọn Afojusun
- [Supplement] Describe translocation as the movement of sucrose and amino acids in phloem from sources to sinks
- [Supplement] Describe: (a) sources as the parts of plants that release sucrose or amino acids (b) sinks as the parts of plants that use or store sucrose or amino acids
- [Supplement] Explain why some parts of a plant may act as a source and a sink at different times
Akọ̀wé Ẹ̀kọ́
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori Translocation. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- Translocation is the movement of sucrose and amino acids in the: A. xylem B. phloem C. epidermis D. cortex Answer: B
- A source in a plant is a part that: A. uses or stores sugar B. releases sucrose or amino acids C. only absorbs water D. carries out respiration only Answer: B
- Which of these usually acts as a sink? A. a green leaf in bright light B. a growing root C. a fully photosynthesising leaf D. the air spaces Answer: B
- Compared with water in the xylem, substances in the phloem can move: A. upwards only B. downwards only C. up or down D. not at all Answer: C
- A sprouting potato tuber sending sugar to its buds is acting as a: A. sink B. source C. root hair D. stoma Answer: B
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Awọn Iwe Itọsọna Ti a Gba Nimọran
Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe
Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Translocation? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
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