List of top Questions asked in AP EAPCET

Match the following:

List I	List II
I) Well developed large pith	D) Monocot root
II) Casparian strips	A) Endodermis
III) Sclerenchymatous bundle sheath	C) Dicot stem
IV) Endarch protoxylem	B) Monocot stem

Identify the correct sequence of steps in the formation of root nodules in legumes:
[a.] Formation of infection thread
[b.] Curling of root hair
[c.] Stimulation of cell division in cortex and pericycle
[d.] Release of sugars and amino acids by legume roots
[e.] Release of bacteria into cortical cells

The cavities in the vascular bundles of monocot stem

Match the following

Set I		Set II		Set III
I.	DNA Ligase	A.	Polymerisation	i.	Okazaki fragments
II.	DNA Polymerase	B.	Introns	ii.	Reactive & unstable
III.	Splicing	C.	Joining	iii.	mRNA
IV.	Ribozyme	D.	RNA Enzyme	iv.	One direction

Yeast poison themselves to death, because

These features are not characteristics of dicotyledonous root:

A. Radial vascular bundles.
B. Pith little or absent.
C. Vascular bundles 15 – 20.
D. Cambium ring do not develop.

The reason for the genetic variation in the population of organisms

Assertion (A): There is no variation in size of mature seeds in orchids.
Reason (R): Lodoicea maldivica is the plant with largest seed.

The following plant is submerged and suspended in water

The colour of chlorophyll 'b' in the chromatogram.

Assertion (A): Dry dehiscent fruits are usually single seeded.
Reason (R): Tridax fruit is cypsella with pappus like calyx.

The physiological and morphological phenomena that happen when bulliform cells absorb water and undergo water stress respectively

The correct match among the following

I. Clostridium - Botulism
II. Diplococcus - Pneumonia
III. Treponema - Gonorrhoea
IV. Neisseria - Tetanus

Bi-collateral vascular bundles can be found in these plants
A. Smilax zeylanica
B. Lilium candidum
C. Lycopersicon esculentum
D. Withania somnifera

The number of absorbed CO$_2$ and water molecules to produce 180 g of glucose in plants are:

Sickle cell anemia is this mutation and occurs due to change of these amino acids.

Assertion (A): Methanogens are present in the rumen of cattle.
Reason (R): They help in the breakdown of cellulose and nutrition of cattle.

Structural elements of cells

Free-living microorganisms that feed on organic detritus and an example

Choose the set of wrong combinations A) Acacia - Phyllode - Petiole
B) Nepenthes - Insectivorous plant - Nitrogen requirement
C) Hibiscus - Two leaves at each nodes - Alternate
D) Neem - Number of leaflets attached at common point - Pinnately compound

Placentation in which ovules develop either on the inner wall of the ovary or attached on the peripheral part

The correct combinations among the following:

Scientist	Event / Contribution
I. Miescher	Named nuclein
II. Fisher	Discovered purines
III. Altman	Isolated nucleic acids
IV. Franklin	DNA X-ray diffraction

Assertion (A): Photorespiration is a wasteful process.
Reason (R): There is no synthesis of sugars, ATP or NADPH, instead ATP is utilized and CO$_2$ is released in photorespiration.

A flower has 6 stamens out of which half are removed. The total number of male gametes produced from that flower if each lobe of its dithecous anther contains 26 pollen mother cells

Four plants are observed. ‘A’ is a primitive land plant. ‘B’ is embryophytic archegoniate phanerogam. ‘C’ is autotrophic thallophyte showing haplontic life cycle. ‘D’ is nonflowering plant with heterosporous sporangium. The plants found respectively are