In guava, cucurbits flowers are

• hypogynous

• epigynous

• perigynous

• Both (a) and (c)

In floral formula (K) denotes

• polysepalous

• gamosepalous

• polypetalous

• gamopetalous

Which of the following is photophosphorylation?

• Production of ATP from ADP

• Production of NADP

• Synthesis of ADP from ATP

• Production of PGA

4.

What is the structural element of cell wall?

• Matrix

• Microtubules

• Microfibrils

• Arabinogalactans

Which chemical is used for induction of polyploidy?

• Cytokinin

• Nitrous acid

• Colchicine

• IAA

In which book, Bentham and Hooker proposed their classification?

• Genera Plantarum

• Species Plantarum

• Historia Plantarum

• Historia Naturae

When does a plant wilt?

• When phloem is blocked

• When xylem is blocked

• Pith is removed

• A few leaves are removed

Which of the following sequence is a correct one for meiotic cell cycle?

• G_1 $\to$S $\to$G₂ $\to$ M $\to$G₁

• G₁ $\to$G₂ $\to$S $\to$M $\to$G₂

• G₂ $\to$G₁ $\to$S $\to$M $\to$G₂

• S $\to$G₁ $\to$G₂ $\to$M $\to$S

In the following pairs, where do you get lignin in both the element?

• Tracheid and collenchyma

• Sclerenchyma and sieve tube

• Sclerenchyma and trachea

• Parenchyma and endodermis

From which of the following, photosynthetic autotrophs receive their energy?

• Heat

• Inorganic chemicals

• Organic chemicals

• Light