Tag: natural vegetative propagation

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Questions Related to natural vegetative propagation

Multiple choice natural vegetative propagation reproduction in plants biology

Each leaf scar in a tuber has a bub called _______.

  1. Eye

  2. Scale

  3. Both A & B

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
(A) Eye.
The tuber consists of parts of a normal stem, including nodes and internodes. The nodes are the eyes and each has a leaf scar. The nodes or eyes are arranged around the tuber in a spiral fashion beginning on the end opposite the attachment point to the stolon.
Multiple choice natural vegetative propagation reproduction in plants biology

A short aquatic runner may be called as?

  1. Trailers

  2. Stolon

  3. Offset

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

A stolon is a slender branch that grows horizontally above the ground and roots at the nodes, often referred to as an aquatic runner in some contexts.

Multiple choice natural vegetative propagation reproduction in plants biology

Which of the following is incorrect?


I. Bryophyllum and Kalanchoe can be vegetatively propagated by leaf segments.
II. Mango and Guava are propagated through grafting.
III. Individual of clone have same height.
IV. Roots are used in the vegetative propagation of sweet potato.
V. Oestrus cycle is found in mammalian females other than primates.

  1. I and II

  2. Only III

  3. II and IV

  4. IV and V
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Answer is option A i.e. "I and II"
Bryophyllum and Kalanchoe can reproduce by the formation of buds on leaves, i.e. they can propagate vegetatively. Mango and guava asexually reproduce or propagated through grafting. Grafting is the basic propagation option for mango and guava.
Whereas, clones have same genetic make-up but not phenotypic (e.g. their height may differ).
Vegetative propagation of sweet potato occurs through adventitious buds.
Oestrus cycle is the period in the sexual cycle of female mammals, except the higher primates.

Multiple choice natural vegetative propagation reproduction in plants biology

Onions and gladioli grow from

  1. Bulbs

  2. Roots

  3. Buds on the leaf margin

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

Onions and gladioli are classic examples of plants that propagate using bulbs, which are underground modified stems with fleshy leaves.

Multiple choice natural vegetative propagation reproduction in plants biology

Seeds are not a product of reproduction in

  1. Lemons

  2. Potatoes

  3. Tomatoes

  4. Jowar
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • The potato is a starchy, tuberous crop which is native to America. Potato do not reproduce by sexual reproduction which requires seeds. 
  • Potatoes are mainly propagated by vegetative methods (cloning). Potato tubers have nodes or eyes from which the new growth begins. The new stems growing from each eye are called sprouts which give rise to the new plant.
  • So, the correct answer is 'Potatoes'.
Multiple choice natural vegetative propagation reproduction in plants biology

In Bryophyllum, vegetative propagation takes place through their 

  1. Leaf

  2. Stem

  3. Root

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

Bryophyllum produces plantlets along the margins of its leaves. When they mature, they drop off and root in any suitable soil beneath thereby performing the function of vegetative propagation.
Thus, the correct answer is option (A), 'Leaf'.

Multiple choice natural vegetative propagation reproduction in plants biology

Ramu collected epiphyllous buds from a plant. The plant from which he has collected these buds can be?

  1. Murraya

  2. Bryophyllum

  3. Neem

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

When the buds arises on the leaves they are called as epiphyllous buds, e.g., Bryophyllum. Epiphyllous budding is a unique mode of vegetative proliferation in restricted plant species. Leaf detachment induces activation of these buds which then develop into plantlets by differentiating roots and shoot. Leaf detachment not only induces bud differentiation but also concurrently triggers foliar senescence. Inflorescences and vegetative shoots arise from epiphyllous buds on the adaxial surface of the rachis between the pinna pairs.  

Multiple choice natural vegetative propagation reproduction in plants biology

In Bryophyllum, vegetative reproduction takes place through

  1. Root

  2. Stem

  3. Leaf

  4. Rhizome
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Bryophyllum produces plantlets along the margins of its leaves. When they mature, they drop off and root in any suitable soil beneath.
Thus, the correct answer is option (C), 'Leaf'.

Multiple choice natural vegetative propagation reproduction in plants biology

Leaves : Bryophyllum :: Stem : 

  1. Potato

  2. Turmeric

  3. Ginger

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Potato, turmeric and ginger are modified stem and perform the function of food storage.
Reproduction in Bryophyllum occurs asexually through vegetative propagation by leaves.
So the correct option is 'Potato, turmeric, ginger'.
Multiple choice natural vegetative propagation reproduction in plants biology

The potatoes are called modified stem because of:

  1. Eye of potato

  2. Tuber

  3. Bud

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
In potato the under ground portion is a modified stem in that it stores reserve food and has all characters of stem i.e. roots and shoots appear from it and it has buds (eyes) also. Potato is a tuber (that part carry out photosynthesis- the green color part seen in young potato). It is called a modified stem as it has scaly leaves, nodes, internodes and adventitious roots, characteristic to stems.
Hence answer is 'Both A and B'