Biology-Botany-Online-MCQ-Test NEET UG Medical-Dental,Aiims,Jipmer

NEET UG Botany MCQ-99

Question No:1

Nucleolus is the site for the synthesis of

(A) DNA
(B) m-RNA
(C) t-RNA
(D) Ribosomes

Question No:2

Which of the following statement is not true

(A) Animal cells never contain chloroplast unlike many plant cells
(B) Animal cells contain ultrascopic chloroplast while plant cells contain microscopic chloro plast
(C) Plant cells have cellulosic cell wall, while animal cells do not
(D) Plant cells have central vacuoles while animal cells do not

Question No:3

Lysosomes are formed by

(A) Endoplasmic reticulum
(B) Mitochondrion
(C) Golgi membrane
(D) Both (a) and (c)

Question No:4

Chromosomes in a bacterial cell be 1-3 in number and

(A) Are always circular
(B) Are always linear
(C) Can be either circular of linear, but never both within the same cell
(D) Can be circular as well as linear within the same cell.

Question No:5

Mitochondria often seen aggregated around

(A) Food vacuole
(B) Contractile vacuole
(C) Water vacuole
(D) All of these

Question No:6

The main components of plasma membrane are

(A) Lipids and proteins
(B) Lipids, proteins and carbohydrates
(C) Lipid only
(D) Proteins only

Question No:7

Centromere is required for

(A) Transcription
(B) Crossing over
(C) Cytoplasmic cleavage
(D) Movement of chromosomes towards poles

Question No:8

Protein synthesis in an animal cell occurs

(A) Only on the ribosomes present in cytosol
(B) On, ribosomes present in cytoplasm as well as in mitochondria
(C) Only on ribosomes attached to the nuclear envelope and endoplasmic reticulm
(D) On ribosomes present in the nucleolus as well as in cytoplasm.

Question No:9

The main organellae involved in modification and routing of newly synthesized proteins to their destinations is

(A) Mitochondria
(B) Endoplasmic reticulm
(C) Lysosome
(D) Chloroplast

Question No:10

Chlorophyll in chloroplasts is located in

(A) Grana
(B) Pyrenoid
(C) Stroma
(D) Both (a) and (c)

Question No:11

Cell membrane in animals is composed mainly of the molecule of

(A) Lipids
(B) Proteins
(C) Lipids and proteins
(D) Carbohydrates

Question No:12

Which one is single membrane cell organelle?

(A) Nucleus
(B) Mitochondria
(C) Lysosomes
(D) Chloroplast.

Question No:13

Pigment anthocyanin is located in

(A) Chloroplast
(B) Chromoplast
(C) Cytoplasm
(D) Vacuole.

Question No:14

Protists are

(A) Unicellular and prokaryote
(B) Multicellular and eukaryote
(C) Unicellular and eukaryote
(D) Autotroph or heterotroph.

Question No:15

Nucleated RBC is present in

(A) Man
(B) Rat
(C) Frog
(D) Rabbit

Question No:16

In which part of mitochondria does ATP synthesis occur?

(A) F1
(B) F0
(C) Cristae
(D) Inner membrane of mitochondria

Question No:17

The thylokoid in Chloroplast are arranged as

(A) Inter connected disc
(B) Inter connected sacs
(C) Stacked discs
(D) None of the above

Question No:18

Phospholipids are

(A) Amphipathic
(B) Amphibolic
(C) Hydrophobic
(D) None of the above

Question No:19

Protein synthesis in an animal cell, takes place

(A) Only in the cytoplasm
(B) In the nucleolus as well as in the cytoplasm
(C) In the cytoplasm as well as in mitochondria
(D) Only on ribosomes attached to nucleus

Question No:20

Ribosomes are produced in

(A) Nucleus
(B) Cytoplasm
(C) Mitochondria
(D) Golgibody