In a woody dicotyledonous tree, which of the following parts wall mainly consist of primary tissues
In a woody dicotyledonous tree, which of the following parts wall mainly consist of primary tissues
- [AIPMT 2005]
- A
Stem and root
- B
All parts
- C
Flowers, fruits and leaves
- D
Shoot tips and root tips
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Contractile tissues have the following features
$(i)$ Mesodermal in origin
$(ii)$ They contain stretch receptors.
$(iii)$ Rhythmic contractions are seen in them
$(iv)$ They do not fatigue during the life of the animal
Which of the above are characteristics of sphincters?
Contractile tissues have the following features
$(i)$ Mesodermal in origin
$(ii)$ They contain stretch receptors.
$(iii)$ Rhythmic contractions are seen in them
$(iv)$ They do not fatigue during the life of the animal
Which of the above are characteristics of sphincters?
- [AIIMS 2015]