Structural Organisation in Animals and Plants - 1
Structural Organisation in Animals and Plants - 1
Questions
_______ glands have a number of sacs.
- Simple tubular
- Simple branched alveolar
- Simple branched tubular
- Simple alveolar
Cuboidal and columnar refers to
- connective tissue
- nervous tissue
- epithelial tissue
- muscular tissue
The characteristic thickenings present on the radial and transverse walls of endodermis are
- casparian strips
- bundle caps
- bundle sheaths
- passage cells
The aerial pseudostem of musa is called
- offset
- tuber
- collar
- shaft
The vascular bundles of a monocot stem are
- collateral and closed
- collateral and open
- radially arranged and open
- radially arranged and closed
Stipules give protection to
- terminal bud
- axillary bud
- flower bud
- nodes
The seed coat is fused with the pericarp in
- legume
- sorosis
- caryopsis
- drupe
Fusiform initial cells produce
- vascular rays
- ray parenchyma
- trachery element
- primary phloem
Protosteles are found in
- bryophyta
- gymnosperms
- pteridophyta
- angiosperms
Underground stems differ from roots in having
- nodes and internodes
- axillary and terminal buds
- scale leaves
- All of the above
Which of the following pairs of plant structures has haploid number of chromosomes?
- Egg nucleus and secondary nucleus
- Megaspore mother cell and antipodal cells
- Egg cell and antipodal cells
- Nucellus and antipodal cells
Epithelia are neither innervated by nerve cells nor pervaded by blood vessels due to
- lack of intercellular space
- excessive intercellular space
- non-requirement of vascular/nerve supply
- None of these
Which of the following cells are the most numerous in human body?
- Neurons
- Erythrocytes
- Myocytes
- Lymphocytes
Which of the following muscles is unable to undergo a sustained contraction?
- Skeletal muscle
- Visceral muscle
- Cardiac muscle
- None of these
Which of the following statements is true about cartilages?
- They are highly vascular.
- They are poorly vascular.
- They are non-vascular.
- They are supplied by lymph.
Which of the following prevents the insects from entering the pitcher and from escaping out?
- The rim of the pitcher
- The hair pointed downwards below the rim
- The tendrill-like coiled structure of Nepenthes
- The lower part of the petiole
Which of the following is true about a bone?
- It is made of an inflexible material chondrin.
- It is completely non-vascular.
- Its matrix is homogeneous.
- Its osteocytes are irregular with off branches.
Girdling of a tree involves the removal of
- xylem
- phloem
- xylem and phloem
- vascular cambium
Blood vessels are covered by
- epithelial tissues
- connective tissues
- muscular tissues
- nervous tissues
Which of the following types of adventitious root modifications is found in Ipomoea batatas (sweet potato)?
- Tuberous roots
- Fasciculated roots
- Nodulose roots
- Moniliform roots