Loss of chlorophyll leading to yellowing in leaves is called:
Show Hint
- Chlorosis
- Necrosis
- Bronzing
- Die-back
The Correct Option is A
Solution and Explanation
- It may occur due to deficiency of elements like Mg, Fe, N, S etc.
Other options:
- Necrosis – death of tissue
- Bronzing – dark reddish discoloration
- Die-back – death of shoot from tip backward
Top Questions on Botany
Match the following varieties with their pest/disease resistance:
List I (Variety) List II (Pest/Disease) A Pusa Gaurav I Nematodes B Pusa Sem 2 (Bean) II Stem and fruit borer C Pusa Sawani (Okra) III Jassids, aphids, fruit borer D Parbhani Kranti (Okra) IV Yellow Mosaic Virus - Choose the incorrect statements:
I. Electrons from NADH produced in the mitochondrial matrix are oxidized by complex II
II. Ubiquinones oxidised to ubiquinol by receiving reducing equivalents from complex I
III. Ubiquinol oxidized to ubiquinone by transfer of electrons to complex III - Choose the correct statements:
I. In exothermic reactions, ‘P’ is at a lower level than ‘S’
II. Enzyme activity is affected by temperature due to changes in tertiary structure
III. Low temperature denatures the protein
IV. Ligases remove groups from substrate - No. of ATP, protons and electrons required for the formation of 6NH$_3$ molecules in biological nitrogen fixation.
Match the terms in List-I with their correct descriptions in List-II:
\[ \begin{array}{|l|l|} \hline \textbf{List-I} & \textbf{List-II} \\ \hline \text{A) Vivipary} & \text{I) Adaptation to lower environmental stress by germinating seeds while still attached to the parent plant} \\ \text{B) Parthenogenesis} & \text{IV) Development of an embryo from an unfertilized female gamete (asexual reproduction)} \\ \text{C) Meiocytes} & \text{III) Diploid cells specialized to undergo meiosis (e.g., spermatocytes, oocytes)} \\ \text{D) Perennials} & \text{II) Bamboo flowering once at the end of its life cycle (monocarpic perennial)} \\ \hline \end{array} \]
Questions Asked in AP EAPCET exam
- Two blocks of masses 8 kg and 12 kg kept on a smooth horizontal table are connected to the ends of a light string as shown in the figure. If a horizontal force of 500 N is applied to the block of mass 12 kg, then the tension in the string connecting the blocks is
- AP EAPCET - 2025
- laws of motion
- If the normal drawn to the hyperbola \( xy = 16 \) at (8, 2) meets the hyperbola again at a point \((\alpha, \beta)\), then \( |\beta| + \frac{1}{|\alpha|} = \)
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- Hyperbola
- If the binding energy per nucleon of deuteron (\( ^1\mathrm{H}^2 \)) is 1.15 MeV and an \(\alpha\)-particle has a binding energy of 7.1 MeV per nucleon, then the energy released per nucleon in the given reaction is \[ ^1\mathrm{H}^2 + ^1\mathrm{H}^2 \rightarrow ^2\mathrm{He}^4 + Q \]
- AP EAPCET - 2025
- Nuclear physics
- If the function \( f \) defined by \[ f(x) = \begin{cases} \dfrac{1 - \cos 4x}{x^2}, & x<0 \\ a, & x = 0 \\ \dfrac{\sqrt{x}}{\sqrt{16 + \sqrt{x}} - 4}, & x>0 \end{cases} \] is continuous at \( x = 0 \), then \( a = \)
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- Limits and Exponential Functions
If \( \vec{u}, \vec{v}, \vec{w} \) are non-coplanar vectors and \( p, q \) are real numbers, then the equality:
\[ [3\vec{u} \quad p\vec{v} \quad p\vec{w}] - [p\vec{v} \quad \vec{w} \quad q\vec{u}] - [2\vec{w} \quad q\vec{v} \quad q\vec{u}] = 0 \]
holds for:
- AP EAPCET - 2025
- Geometry and Vectors
