AIEEE Sample Question Papers – BOTANY (Contd.) 03
Botany (contd.)
25. Crossing over is an exchange of genetic material between nonsister chromatids of a bivalent during
(A) Meiosis I
(B) Meiosis II
(C) Mitosis
(D) All of the above
26. Who among the following said that the percentage of A + G equals 50% and the percentage of T + C equals 50% ?
(A) Hershey and Chase
(B) Jacob and Monad
(C) Griffith and Niescher
(D) None of the above
27. Biologists who study the sequence of organisms in the fossil record are
(A) Systematists
(B) Taxonomists
(C) Paleobiologists
(D) None of the above
28, The cretaceous period, during which flowering plants appeared,occurred approximately
(A) 280 million years ago
(B) 135 million years ago
(C) 1,35 billion years ago
(D) 80 milliol1 years ago
29. Bacteria that must have organic molecules both for energy and as a source of carbon are called
(A) Chemoautotrophs
(B) Photohetrotrophs
(C) Photoautotrophs
(D) Chemoheterotrophs
30. In allopatric speciation, the initial barrier to gene flow is
(A) Ecological
(B) Postzygotic
(C) Geographic
(D) None of the above
31. Saffron is obtained from
(A) Dried stigma of Crocus plant
(B) Dried flower of Papaver somniferum
(C) Dried flower of rose
(D) None of the above
32. The correct statement(s) for photosynthesis is/are
(A) It provides food either directly or indirectly for most living things
(B) It produces oxygen
(C) It provides energy to create today’s fossil fuels
(D) All of the above are correct
33. Cladode is found in
(A) Asparagus
(B) Opuntia
(C) Both (A) and (B)
(D) Hydrilla
34. Which of the following plants yielc!s the drug ‘ephedrine’ ?
(A) I Saraca indica
(B) Terminalia arjuna
(C) Adhatoda vasica
(D) None of the above
Chemistry
1. The separation energy of the electron, present in shell n = 3 is 1.51 eV. What is the energy in the first excited state?
(A) – 1.51 eV
(B) – 3.4 eV
(C) + 1.51 eV
(D) – 13.6 eV
2. If the electron is present in the n = 5 level, how many lines would be observed, in case of H- atom ?
(A) 10
(C) 7
(B) 5
(D)4
3. Total number of moles of electrons in one mole of K 2 Cr 2 0 7 will be
(A) 142
(C) 140
(B) 86
(D) 100
4. ? = X A – X B = 2. What is the percent ionic character for a covalent molecule A – B ?
(A) 46
(B) 50
(C) 20
(D) 30
5. If Y = then y will show the maximum value for the compound
(A) Rbl
(C) RbF
(B) Lil
(D) LiF
6. Three fold symmetrical axis is associated with the molecule
(A) NH 3
(B) C 2 H 4
(C) CO 2
(D) S0 2
7. K c for the reaction 2NaHCO 3(S) Na 2 CO 3(S) + CO 2(g) + H 2 O (g) is
(A) K c = [Na 2 CO 3 ]
[NaHCO 3 ] 2
(B) K c = [Na 2 CO 3 ] [CO 2 ] [H 2 O]
[NaHCO 3 ] 2
(C) K c = [CO 2 ] [H 2 O]
(D) K c = PCO 2 X PH 2 O
,.
8. A substance whose initial concentration is ‘a’ reacts according to zero order kinetics. The time required for completion will be
(A) a
K 0