Study the following table
$\begin{matrix} P l a n t & M o d i f i e d p a r t & N a m e o f m o d i f i c a t i o n & P u r p o s e 1. & P i s t i a & S t e m & O f f s e t & R e p r o d u c t i o n 2. & P e a & S t e m & T e n d r i l & C l i m b i n g 3. & O p u n t i a & L e a f & P h y l l o d e & P h o t o s y n t h e s i s 4. & B o u g a i n v l l e a & L e a f & S p i n e & P r o t e c t i o n \end{matrix}$
Which of the above show the correct combination?

1 and 2

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3 and 4

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1 only

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1, 2, 3 and 4

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Solution

The correct option is C
1 only

In Pistia, the stem is modified to an offset which helps in vegetative propagation. The offsets here grow in all directions from the main stem of the parent plant. If any accidental injury results in the separation of these units, each is capable of leading an independent existence thus acting as units for vegetative propagation. Tendrils in pea are modified leaves and not stems. Opuntia has a flattened modified stem called phylloclade which contains chlorophyll and can perform photosynthesis. Spines in Bougainvillea are aerial stem modifications.

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Similar questions

Study the following table
$\begin{matrix} P l a n t & M o d i f i e d p a r t & N a m e o f m o d i f i c a t i o n & P u r p o s e 1. & P i s t i a & S t e m & O f f s e t & R e p r o d u c t i o n 2. & P e a & S t e m & T e n d r i l & C l i m b i n g 3. & O p u n t i a & L e a f & P h y l l o d e & P h o t o s y n t h e s i s 4. & B o u g a i n v l l e a & L e a f & S p i n e & P r o t e c t i o n \end{matrix}$
Which of the above show the correct combination?

Study the following table

Plant Modified part Name of modification Purpose

1. Pistia Stem Offset Reproduction

2. Pea Stem Tendril Climbing

3. Opuntia Leaf Phyllode Photosynthesis

4. Bougainvillea Leaf Spine Protection

Which of the above show correct combinations?

Q. Choose the correct combination:

\begin{matrix} 1. Retarder & P. Fly Ash 2. Accelerator & Q. Superplasticizer 3. Pozzolana & R. Gypsum 4. Workability & S. Calcium chloride \end{matrix}

The following table shows the birth month of 40 students of class IX.

$\begin{matrix} J a n . & F e b . & M a r c h & A p r i l & M a y & J u n e & J u l y & A u g . & S e p t . & O c t . & N o v . & D e c . 3 & 4 & 2 & 2 & 5 & 1 & 2 & 6 & 3 & 4 & 4 & 4 \end{matrix}$

Find the probability that a student was born in August.

Q. Plot the points (x,y) given by the following table.

\begin{matrix} x & 2 & 4 & - 3 & - 2 & 3 & 0 y & 4 & 2 & 0 & 5 & - 3 & 0 \end{matrix}

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Study the following table PlantModified partName of modificationPurpose1.PistiaStemOffsetReproduction2.PeaStemTendrilClimbing3.OpuntiaLeafPhyllodePhotosynthesis4.BougainvlleaLeafSpineProtection Which of the above show the correct combination?