Tag: transport of water across plants

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Questions Related to transport of water across plants

Multiple choice biology water absorption and ascent of sap in plants transport of water across plants habit of plants plant classifications

With reference to the pioneering word done on the plants listed match List(Plants) with List II(Phenomena) and select the correct answer using the codes given the lists.

List-I(Plants) List-II(Phenomena)
a. Sinapis alba $1$. Phototropism
b. Barely roots $2$. Tanda effect
c. Mougetia $3$. Control of gene expression by phytochrome
d. Arabidopsis $4$. Chloroplast movement

  1. A-$1$, B-$2$, C-$4$, D-$3$

  2. A-$1$, B-$4$, C-$2$, C-$3$

  3. A-$3$, B-$2$, C-$4$, D-$1$

  4. A-$3$, B-$4$, C-$2$, D-$1$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sinapis alba relates to phototropism, Barley roots to the Tanda effect, Mougetia to chloroplast movement, and Arabidopsis to phytochrome gene expression. This matches A-1, B-2, C-4, D-3.

Multiple choice biology water absorption and ascent of sap in plants transport of water across plants habit of plants plant classifications

Papaya is a dioecious plant. This condition prevents.

  1. Both autogamy and geitenogamy

  2. Only autogamy

  3. Only xenogamy

  4. Geitonogamy
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Dioecious plants have male and female flowers on separate individuals. This physical separation prevents both autogamy (self-pollination within the same flower) and geitonogamy (pollination between flowers on the same plant).

Multiple choice biology water absorption and ascent of sap in plants transport of water across plants habit of plants plant classifications

Which of the following statements are not true?

  1. In CAM plants, stomata open during dark and remain closed during the day

  2. Role of $Na^+$ in stomatal opening is now universally accepted

  3. Water potential of root cells is higher than water potential of soil

  4. Capillarity theory is most accepted theory of water movement through plants

  5. Wall of xylem vessels made up of lignocellulose has strong affinity for water molecules
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice biology water absorption and ascent of sap in plants transport of water across plants habit of plants plant classifications

Phytotron in meant for

  1. Controlled irradiation

  2. Induction of mutations

  3. Controlled humidity

  4. Growing plants under controlled environment
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A phytotron is a specialized facility designed for growing plants under strictly controlled environmental conditions, such as temperature, humidity, and light.

Multiple choice biology water absorption and ascent of sap in plants transport of water across plants habit of plants plant classifications

A secondary compounds is not a part of the plants

  1. Defense against herbivores

  2. Normal metabolism

  3. Evolution

  4. embryology
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Secondary compounds are complex chemicals made by plants that are not essential to the life of the plant. They are thought to be produced primarily as pesticides and anti-grazing agents, but they also used as pigments, hormones and chemical agents that can attack other plants.

So, the correct option is 'Defense against herbivores'.