Tag: anatomy of flowering plants

Quizzes (15) Questions (43)

Questions Related to anatomy of flowering plants

Multiple choice special tissues plant tissues plant tissues - internal morphology and anatomy anatomy of flowering plants biology

Specialized parenchyma cells which store tannins, oils and crystals of calcium oxalate are called

  1. Sclereids

  2. Idioblasts

  3. Stone cells

  4. Conjunctive tissue
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Parenchymatous tissues are readily used for storage of various cells like food, air and chlorophyll. An idioblast is atype of parenchyma tissue which mainly  performs various functions such as storage of reserves, excretory materials, pigments, and minerals. They contain oil, latex, gum, resin, tannin or pigments, poisonous calcium oxalate or carbonate or silica. Idioblasts are divided into three main categories: excretory, tracheoid, and sclerenchymatous.

Multiple choice special tissues plant tissues plant tissues - internal morphology and anatomy anatomy of flowering plants biology

Mesarch xylem is common in

  1. Ferns

  2. Bryophytes

  3. Dicots

  4. Monocots
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Mesarch is used when there is more than one strand of primary xylem in a stem or root and the xylem develops from the middle of a strand in both directions. The metaxylem is thus on both the peripheral and central sides of the strand with the protoxylem between the metaxylem (possibly surrounded by it). 
The leaves and stems of many ferns have mesarch development.
Multiple choice special tissues plant tissues plant tissues - internal morphology and anatomy anatomy of flowering plants biology

Laticiferous vessels are found in

  1. Xylem tissue

  2. Phloem tissue

  3. Cortex

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Lacticiferous vessels are found in plants that produce latex. Laticifers are connected longitudinally to form long chains of coenocytic cells. Laticifers or lacteal ducts are located in the cortex and are specialized type of parenchymatous cells.
So, the correct answer is 'Cortex'

Multiple choice special tissues plant tissues plant tissues - internal morphology and anatomy anatomy of flowering plants biology

Amphiphloic (bicollateral) condition of stele means, that

  1. Phloem is surrounded by xylem

  2. Phloem is on both sides of xylem

  3. Phloem is internal to xylem

  4. Phloem is external to xylem
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In a stele, if phloem is both external and internal to xylem, it is called as bicollateral, as found in leaves mostly and in a few stems. This can be seen in Solanaceae and Cucurbitaceae family.

Multiple choice special tissues plant tissues plant tissues - internal morphology and anatomy anatomy of flowering plants biology

Ferulic acid, coumarin and hesperidin are

  1. Secondary plant products

  2. Hormones

  3. Enzymes

  4. Vitamins
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Secondary metabolites are plant products that are not involved in the development and growth of plant but are required by the plant for its survival. Plant secondary metabolites are divided into three groups, namely flavonoids, phenolic and polyphenolic compounds like ferulic acid, hesperidin and coumarin; terpenoids; and nitrogen-containing alkaloids and sulphur-containing compounds.
Thus, the correct answer is 'Secondary plant products'.
Multiple choice special tissues plant tissues plant tissues - internal morphology and anatomy anatomy of flowering plants biology

Match List I(Type of Tissues/structures) with List II(Characteristic features of the tissue) and select the correct answer using the codes given the lists.

List-I List-II
a. Hydathodes $1$. Balloon-like protrusions into treachery element, developed from Xylem Parenchyma 
b. Collenchyma $2$. Mechanical tissue that consists of living cells, walls rich in pectin and hemicelluloses
c. Periblem $3$. Occur on leaf tips responsible for guttation
d. Tyloses $4$. Meristematic tissue responsible for the development of cortex
  1. A-$2$, B-$3$, C-$4$, D-$1$
  2. A-$3$, B-$2$, C-$1$, D-$4$
  3. A-$2$, B-$3$, C-$1$, D-$4$
  4. A-$3$, B-$2$, C-$4$, D-$1$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Hydathodes are structures on leaf tips for guttation (a-3). Collenchyma is a living mechanical tissue with pectin-rich walls (b-2). Periblem is the meristematic layer that develops into the cortex (c-4). Tyloses are balloon-like outgrowths from xylem parenchyma into vessels (d-1).

Multiple choice biology anatomy of flowering plants theories of meristematic cell development theories of shoot apical meristem development shoot and root apex

Match column I with column II and select the correct option from the given codes.

   Column  I     Column II
 A.  Vegetative buds  i.  Buds develop in axils of leaves
 B.  Floral buds  ii.  Buds produce leafy shoots 
 C.  Axillary buds  iii.  Reproductive buds that produce flowers
 D.  Accessory  iv  Additional buds borne at leaf bases

  1. (A) - (ii), (B) - (iii), (C) - (i), (D) - (iv)

  2. (A) - (iii), (B) - (ii), (C) - (i), (D) - (iv)

  3. (A) - (iv), (B) - (iii), (C) - (ii), (D) - (i)

  4. (A) - (i), (B) - (ii), (C) - (iv), (D) - (iii)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bud is a condensed rudimentary shoot. Such buds developed into leafy shoots.

  • Axillary buds: originate from the axils of leaves.
  • Vegetative buds: Buds that give rise to new shoots and leaves. Presence of such bud indicates the regrowth of the plant.
  • Floral bud: It is swelling or formation of a premature flower bloom. This bud will eventually produce a flower.
  • Accessory bud:  A bud growing near and in addition to a axillary bud.
  • So, the correct answer is " (A)- (ii),(B)- (iii), (C) - (i), (D) - ( iv).

Multiple choice biology anatomy of flowering plants theories of meristematic cell development theories of shoot apical meristem development shoot and root apex

Flower is always solitary when:

  1. Shoot bud transforms into flower

  2. Shoot tip transforms into flower

  3. Lateral shoot transforms into flower

  4. Horizontal shoot transform into flower
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Option (B) Shoot tip transform into flower.

Shoot tip meristem gets to stop to divide as the shoot cells, and flower formation takes place.
Solitary means a single flower.
When the tip of the shoots is gets transformed into a flower only one single flower will be formed.
Because single tip of shoot have ability to carry only single flower.