NEET Test Series from KOTA - 10 Papers In MS WORD
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Plant growth and development
166839
If the growing plant is decapitated, then
1 Its growth stops
2 leaves become yellow and fall down
3 axillary buds are inactivated
4 axillary buds are activated
Explanation:
D If the growing plant is decapitated, then axillary buds are activated.
[AIPMT-1994]
Plant growth and development
166840
Senescence as an active developmental cellular process in the growth and functioning of a flowering plant, is indicated in:
1 Annual plants
2 Floral parts
3 Vessels and tracheid differentiation
4 Leaf abscission
Explanation:
D Senescence can be defined as the sum of deteriorative processes which naturally terminate the functional life of an organism. It can occur in a plant or may be limited to a particular plant organ such as leaf and flower or cells such as phloem and xylem. Abscission is natural shedding of leaves, foliage branches, fruits, floral parts etc. According to Leopold (1967) abscission is a senescence phenomenon. - Abscission is a cell separation process by which plants can shed organs such as fruits, leaves, or flowers. The process takes place in specific locations termed abscission zones.
[AIPMT-2008]
Plant growth and development
166841
The process in which mature differentiated cells to meristematic activity to form callus is called
1 Cyto differentiation
2 Redifferentiation
3 Dedifferentiation
4 Differentiation
Explanation:
C The process in which mature differentiated cell reverse to meristematic activity to form callus is called 'Dedifferentiation'. Dedifferentiation is a phenomenon of reversion of differentiated cell or nuclei to non differentiated.
[Karnataka CET-2007]
Plant growth and development
166842
The timing of seasonal activities of plants in relation to change in environment condition is termed as
1 dendrochronology
2 biological clock
3 lapse rate
4 phenology
Explanation:
D The timing of seasonal activities plant in relation to change in environmental condition is termed as phenology. It means in summer, fruit ripen. In autumn, leaves change colour and fall in winter, plant rest. It is the study of periodic plant and animal life cycles. Dendrochronology is the science that deals with the dating and study of the annual growth increments or tree ring in woody trees or shrubs.
D If the growing plant is decapitated, then axillary buds are activated.
[AIPMT-1994]
Plant growth and development
166840
Senescence as an active developmental cellular process in the growth and functioning of a flowering plant, is indicated in:
1 Annual plants
2 Floral parts
3 Vessels and tracheid differentiation
4 Leaf abscission
Explanation:
D Senescence can be defined as the sum of deteriorative processes which naturally terminate the functional life of an organism. It can occur in a plant or may be limited to a particular plant organ such as leaf and flower or cells such as phloem and xylem. Abscission is natural shedding of leaves, foliage branches, fruits, floral parts etc. According to Leopold (1967) abscission is a senescence phenomenon. - Abscission is a cell separation process by which plants can shed organs such as fruits, leaves, or flowers. The process takes place in specific locations termed abscission zones.
[AIPMT-2008]
Plant growth and development
166841
The process in which mature differentiated cells to meristematic activity to form callus is called
1 Cyto differentiation
2 Redifferentiation
3 Dedifferentiation
4 Differentiation
Explanation:
C The process in which mature differentiated cell reverse to meristematic activity to form callus is called 'Dedifferentiation'. Dedifferentiation is a phenomenon of reversion of differentiated cell or nuclei to non differentiated.
[Karnataka CET-2007]
Plant growth and development
166842
The timing of seasonal activities of plants in relation to change in environment condition is termed as
1 dendrochronology
2 biological clock
3 lapse rate
4 phenology
Explanation:
D The timing of seasonal activities plant in relation to change in environmental condition is termed as phenology. It means in summer, fruit ripen. In autumn, leaves change colour and fall in winter, plant rest. It is the study of periodic plant and animal life cycles. Dendrochronology is the science that deals with the dating and study of the annual growth increments or tree ring in woody trees or shrubs.
D If the growing plant is decapitated, then axillary buds are activated.
[AIPMT-1994]
Plant growth and development
166840
Senescence as an active developmental cellular process in the growth and functioning of a flowering plant, is indicated in:
1 Annual plants
2 Floral parts
3 Vessels and tracheid differentiation
4 Leaf abscission
Explanation:
D Senescence can be defined as the sum of deteriorative processes which naturally terminate the functional life of an organism. It can occur in a plant or may be limited to a particular plant organ such as leaf and flower or cells such as phloem and xylem. Abscission is natural shedding of leaves, foliage branches, fruits, floral parts etc. According to Leopold (1967) abscission is a senescence phenomenon. - Abscission is a cell separation process by which plants can shed organs such as fruits, leaves, or flowers. The process takes place in specific locations termed abscission zones.
[AIPMT-2008]
Plant growth and development
166841
The process in which mature differentiated cells to meristematic activity to form callus is called
1 Cyto differentiation
2 Redifferentiation
3 Dedifferentiation
4 Differentiation
Explanation:
C The process in which mature differentiated cell reverse to meristematic activity to form callus is called 'Dedifferentiation'. Dedifferentiation is a phenomenon of reversion of differentiated cell or nuclei to non differentiated.
[Karnataka CET-2007]
Plant growth and development
166842
The timing of seasonal activities of plants in relation to change in environment condition is termed as
1 dendrochronology
2 biological clock
3 lapse rate
4 phenology
Explanation:
D The timing of seasonal activities plant in relation to change in environmental condition is termed as phenology. It means in summer, fruit ripen. In autumn, leaves change colour and fall in winter, plant rest. It is the study of periodic plant and animal life cycles. Dendrochronology is the science that deals with the dating and study of the annual growth increments or tree ring in woody trees or shrubs.
D If the growing plant is decapitated, then axillary buds are activated.
[AIPMT-1994]
Plant growth and development
166840
Senescence as an active developmental cellular process in the growth and functioning of a flowering plant, is indicated in:
1 Annual plants
2 Floral parts
3 Vessels and tracheid differentiation
4 Leaf abscission
Explanation:
D Senescence can be defined as the sum of deteriorative processes which naturally terminate the functional life of an organism. It can occur in a plant or may be limited to a particular plant organ such as leaf and flower or cells such as phloem and xylem. Abscission is natural shedding of leaves, foliage branches, fruits, floral parts etc. According to Leopold (1967) abscission is a senescence phenomenon. - Abscission is a cell separation process by which plants can shed organs such as fruits, leaves, or flowers. The process takes place in specific locations termed abscission zones.
[AIPMT-2008]
Plant growth and development
166841
The process in which mature differentiated cells to meristematic activity to form callus is called
1 Cyto differentiation
2 Redifferentiation
3 Dedifferentiation
4 Differentiation
Explanation:
C The process in which mature differentiated cell reverse to meristematic activity to form callus is called 'Dedifferentiation'. Dedifferentiation is a phenomenon of reversion of differentiated cell or nuclei to non differentiated.
[Karnataka CET-2007]
Plant growth and development
166842
The timing of seasonal activities of plants in relation to change in environment condition is termed as
1 dendrochronology
2 biological clock
3 lapse rate
4 phenology
Explanation:
D The timing of seasonal activities plant in relation to change in environmental condition is termed as phenology. It means in summer, fruit ripen. In autumn, leaves change colour and fall in winter, plant rest. It is the study of periodic plant and animal life cycles. Dendrochronology is the science that deals with the dating and study of the annual growth increments or tree ring in woody trees or shrubs.
