Anatomy of Flowering Plants - Online Test

Q1. In Barley stem, vascular bundles are
Answer : Option B
Explaination / Solution:

The vascular bundles in Hordeum vulgare (barley) plant are scattered in ground tissues, many in number and vary in size-smaller towards periphery and bigger towards centre of the ground tissue, oval or rounded in outline, conjoint, collateral and closed.

Q2. Guard cells of stomata are thicker
Answer : Option C
Explaination / Solution:

The cells surrounding the stomata are called guard cells. The guard cells of inner side are thicker and that of outer side is comparatively thinner.

Q3. Function of guard cell in stomata is to
Answer : Option B
Explaination / Solution:

Opening and closing of stomatal pore of stomata is the function of guard cells. Change in osmotic potential cause the opening and closing of stomata.

Q4. Upper surface of leaf is
Answer : Option C
Explaination / Solution:

Epidermal cells are present on both side of leaves. The lower side contain more stomata. The upper surface of leaf is called as adaxial epidermis.

Q5. Tyloses are balloon-like ingrowths in vessels developing from
Answer : Option D
Explaination / Solution:

Tyloses are balloon like in ingrowths in vessels developing from parenchyma cells through the pits of vessel wall of xylem of secondary heartwood.

Q6. Vascular bundles in which cambium is present between xylem and phloem is called as
Answer : Option A
Explaination / Solution:

Vascular bundles in which cambium is present between xylem and phloem is called open vascular bundles and those in which cambium is absent is called closed vascular bundles.

Q7. In angiosperms, main water and mineral transporting elements is
Answer : Option C
Explaination / Solution:

In angiosperms, the main water and mineral transporting element is tracheids. Vessels also transport water and mineral in angiosperms.

Q8. Exarch xylem is present in
Answer : Option C
Explaination / Solution:

The xylem in which protoxylemis outside and metaxylem is inside is called exarch xylem. This kind of xylem is found in roots of dicots.

Q9. In arborescent monocots stem, a secondary cambium grows in
Answer : Option B
Explaination / Solution:

In arborescent monocots stem, secondary cambium grows in hypodermal region for secondary growth that increase the girth of the stem.

Q10. Which type of vascular bundle is shown in figure below

Answer : Option C
Explaination / Solution:

The vascular bundle shown below is closed and conjoint as cambium is absent between xylem and phloem tissue.