Tag: transport of water across plants

Questions Related to transport of water across plants

The Amaryllidaceous is distinguished from liliaceous on the basis of.

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

  1. Regular timorous flower with superior ovary

  2. Umbellate inflorescence, regular timorous flower with superior ovary

  3. Umbellate inflorescence, regular flower and inferior ovary

  4. Umbellate inflorescence and inferior ovary

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Correct Option: A

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

  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-$1$

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Correct Option: A

Plants growing in shady regions are

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

  1. Sciophytes

  2. Xerophytes

  3. Epiphytes

  4. Heliophytes

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Correct Option: A
Explanation:

(a) Those plants which grow best in shade or diffused light are called sciophytes or helioPhobous or PhotoPhobous or shade loving plants.

Papaya is a dioecious plant. This condition prevents.

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

  1. Both autogamy and geitenogamy

  2. Only autogamy

  3. Only xenogamy

  4. Geitonogamy

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Correct Option: A

Which of the following statements are not true?

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

  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

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Correct Option: A

A plant that trails prostrately on ground is ____________.

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

  1. Smilax

  2. Portulaca

  3. Pothos

  4. None of these

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Correct Option: A

Phytotron in meant for

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

  1. Controlled irradiation

  2. Induction of mutations

  3. Controlled humidity

  4. Growing plants under controlled environment

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Correct Option: D

A secondary compounds is not a part of the plants

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

  1. Defense against herbivores

  2. Normal metabolism

  3. Evolution

  4. embryology

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Correct Option: A
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'.