Zadanie 2a
State one transport function of phloem in a flowering plant.
Transport
Umiejętności w tym dziale
Umiejętności z tego działu sprawdza 25 zadań wzorowanych na arkuszach IB z lat 2022–2026. Dział pojawia się w 18 z 57 arkuszy w bazie.
Zadania z tego działu: 25 Otwórz w wyszukiwarce z filtrami
Zadanie 2a
One student counts a wrist pulse for 60 seconds; another counts for 20 seconds and multiplies by three. (i) Suggest why the full-minute estimate may be more accurate. (ii) Suggest one advantage of an electronic pulse monitor over manual counting.
Zadanie 2b
Outline possible consequences when a thrombus obstructs a coronary artery.
Zadanie 2c
An invented adult cohort gives the following associations with total blood cholesterol. Deduce conclusions supported by these results.
- Tabela do uzupełnienia
Zadanie 15
Which statement reliably distinguishes a vein from an artery? A. A vein carries blood towards the heart B. Every vein carries oxygen-rich blood C. Veins are the only vessels containing smooth muscle D. Veins must have thicker walls than the arteries beside…
Zadanie 4b
Monosaccharides enter a dense network of intestinal blood capillaries. Describe adaptations of capillaries for exchanging these small molecules.
Zadanie 5a
Outline two adaptations of xylem vessels for transporting water.
Zadanie 5b
Water moves from soil through a plant to its leaves. Explain how transpiration drives this movement.
Zadanie 7
Biological function depends on coordinated structures and recurring processes. (a) Outline how chromosome behaviour in mitosis produces genetically equivalent cells. (b) Describe the production of mRNA in the nucleus. (c) Explain how arterial and venous…
Zadanie 15
Which combination is typical of many veins carrying blood back from the limbs? A. Valves present; walls relatively thin B. Valves absent; walls thicker than comparable arteries C. Valves present; complete absence of muscle D. Valves absent; walls one…