Need of water - class-XI
| Description: Need of water | |
| Number of Questions: 15 | |
| Created by: Tanya Dwivedi | |
| Tags: biology transport in plants |
The vascular tissue that transports food in different parts of plants is
Choose the wrongly matched pair w.r.t. pathway of water absorption.
| Apoplast pathway | Symplast pathway |
|---|---|
| $(1)$ Involves intercellular spaces and cell wall | Involves interconnected protoplasts |
| $(2)$ Water movement by cytoplasmic streaming | Water movement by mass flow |
| $(3)$ Fast water movement | Slow water movement |
| $(4)$ Occurs in epidermis and cortex | Occurs in endodermis |
Select the incorrect statements
(a) Older dying leaves export most of their mineral content to younger leaves
(b) Sulphur and calcium are frequently remobilised from senescing parts
(c) lons are absorbed from the soil by both passive and active transport
(d) A $C _3$ plant loses only half as much water as a $C _4$ plant for the same amount of $CO _2$ fixed
Aquaporins are transport channels, which
(II) Allow for faster water movement between the cells than osmosis
(III) Allow water molecules to pass during transpiration
(IV) Do not open during drought stress
In plants water moves from ________________.
The passage of water and minerals is confirmly symplast in -
Plant ash indicates.
Which of the following part of a plant absorbs water from the soil?
When the temperature of soil is $0^o$C then.
The movement of water from one cell of the cortex to the adjacent one in roots is due to _________________.
Water absorption through roots can be increased by keeping the plants
The root-hairs are suited for absorbing water from the soil because
Choose the correct answers from the alternatives given.
Field capacity is