List of top Botany Questions asked in AP EAPCET

The number of phenotypes and their genotypic ratio found when heterozygous round and yellow seeded pea plant crossed with other pea plant showing seeds with wrinkled and heterozygous yellow

Assertion (A): Super weeds are fast growing than crops and resistant to weedicides.
Reason (R): There is transfer of new genes into related wild species through natural out crossing.

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

Select the incorrect statements related to anatomical characters from the following
I) Endodermis is a part of the stele.
II) Endodermis with casparian strips are found in the dicot stem.
III) Bulliform cells are found in the upper epidermis of the isobilateral leaf.
IV) Vascular bundles are open in monocot stems.

Name the cells of mature pollen grain when you observe under microscope with the following characters respectively,
A) Bigger cell with abundant food reserve and large irregular shaped nucleus.
B) Small, dense cytoplasm with nucleus.

Assertion (A): Pollen banks can be used in crop breeding programs.
Reason (R): Pollen grains can be stored for many years in liquid nitrogen.

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

Arrange the following events in the correct sequence during the process of fertilization in Angiosperms: I. Fusion of other male gamete with polar nuclei
II. Transfer of pollen grains from anther to stigma
III. Fusion of male gamete with egg nucleus
IV. Release of male gametes into cytoplasm synergid
V. Pollen tube formation

Lac Operon concept is introduced by these biochemists and geneticists:

Match the following:

List I	List II	List III
I. Robert Costanza	C) Price tags	ii) Nature’s life support services
II. Sundarbans	A) Mangroves	iv) Flood protection
III. Lichens	D) Soil formation	i) Other supporting service
IV. Ecological function	B) Public transit	iii) Conserve natural services

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

It is not involved in recombinant DNA production.

Identify the correct combination.
A. Agrobacterium tumefaciens – vector for transgenic plant.
B. Escherichia coli – selectable marker.
C.Thermus aquaticus – Taq polymerase.
D.Bacillus thuringiensis – BT. Toxin.

Deficiency of the following causes Necrosis or death of leaf tissue

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