Developmental Biology MCQs | Developmental Biology Multiple Choice Questions and Answers

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Questions
1 A __________ is an excised piece of leaf or stem tissue used in micropropagation.
A Microshoot
B Medium
C Explant
D Scion

Answer: Explant
2 The larval epidermis is produced by.
A Clear cytoplasm
B Yellow cytoplasm
C Gray vegetal cytoplasm
D Brown cytoplasm

Answer: Clear cytoplasm
3 Rate of growth stops and plants die at a temperature of.
A 20-30°C
B 10-20°C
C 35-40°C
D None of the above

Answer: 35-40°C
4 The secondary tissue is added by the.
A Intercalary meristem
B Vascular cambium
C Apical meristems
D Both A and B

Answer: Both A and B
5 Phenomena that some cells evoke a specific developmental response in other cells is.
A Embryonic influence
B Embryonic induction
C Embryonic stimulation
D Embryonic dominance

Answer: Embryonic induction
6 Effect of auxin diffusing from an apical bud on lateral shoots is known as.
A Promoting effect
B Compensatory effect
C Inhibitory effect
D Supporting effect

Answer: Inhibitory effect
7 The notochord is one of few prominent structural features in chick embryo of about.
A 15 hours
B 18 hours
C 13 hours
D 10 hours

Answer: 18 hours
8 In chick, development of wing feather, thigh feather and claws depends on epithelial specificity conferred by induction from mesenchymal components from different sources of the dermins. This may be attributed to?
A Autocrine interaction
B Regional specificity of induction
C Receptor activation by hormones
D Inactivation of genetic interaction

Answer: Regional specificity of induction
9 Migration of individual cells from the surface into the embryo’s interior is termed as
A ingression
B involution
C invagination
D Delamination

Answer: ingression
10 Cell to cell communication is important in development of an organism. The ability of cells to respond to a specific inductive signal is called
A Regional specificity of induction
B Competence
C Juxtracrine signalling
D Instructive interaction

Answer: Competence
11 During development, if a cell has committed to a particular fate, it is said to be
A pluripotent
B totipotent
C determined
D Differentiated

Answer: determined
12 Bones of vertebrates are derived from embryonic
A Ectoderm
B Epiderm
C Mesoderm
D Endoderm

Answer: Mesoderm
13 The initial dorsal-ventral axis in amphibian embryos is determined by
A The Point Of Sperm Entry
B Gravity
C The Point Of Contact With The Uterus
D Genetic Differences In The Cells

Answer: The Point Of Sperm Entry
14 Certain proteins or mRNAs that are regionally localized within the unfertilized egg and regulate development are called
A Gene Regulators
B Morphometric Determinants
C Cytoplasmic Determinants
D Mosaic Forming Factors

Answer: Cytoplasmic Determinants
15 Synthesis of cytoplasm and cell wall material takes place during.
A Maturation
B Cell division
C Elongation
D None of the above

Answer: Cell division
16 Acetabularia is a kind of.
A Fungi
B Protist
C Multicellular alga
D Unicellular alga

Answer: Unicellular alga
17 Signs of aging include.
A Loss of hair pigment
B Dryness and wrinkling of skin
C Forgetfulness
D All of the Above

Answer: All of the Above
18 An internal factor that influences growth in plants is.
A Hormones
B Water
C Nutrition
D All of the above

Answer: All of the above
19 Stage one in differentiation involves.
A Recognition of apical meristems
B Formation of embryo
C Recognition of cambium
D Production of leaf primordial

Answer: Formation of embryo
20 Alveolar cells of the lung arise from which one of the following layer(s)? (CSIR Life Sciences Dec, 2015)
A Mesoderm
B Endoderm
C Ectoderm
D Both ectoderm and endoderm

Answer: Endoderm

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