NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Anatomy of Flowering Plants
271816
Main function of lenticel is : -
1 Transpiration
2 Guttation
3 Gaseous exchange
4 Bleeding
Explanation:
Exp:C The name lenticel is derived from its (lenslike) lenticular form. They facilitate the gas exchange of oxygen, carbon dioxide and water vapour in plant bodies that produce secondary growth. - Transpiration takes place mostly through stomata. - Guttation and bleeding takes place through hydathodes.
AIPMT-2002
Anatomy of Flowering Plants
271818
Pith cavity occurs in the stem of:
1 Helianthus
2 Zea mays
3 Cucurbita
4 Dracaena
Explanation:
Exp:C The central part of stem is a cavity known as pith, in which the vascular bundles are embedded in its outer zone. It is made up of polygonal oval shaped or rounded parenchyma cells which encloses intercellular space. - The hollow cavity present in the stem is called pith cavity.
AIIMS-2015
Anatomy of Flowering Plants
271819
From the outside to the inside is:
1 Phellem - pericycle - endodermis - phloem
2 Phellem - phloem - endodermis - pericycle
3 Phellem - endodermis - pericycle - phloem
4 Pericycle - phellem - endodermis - phloem.
Explanation:
Exp:C The dicotyledonous stem indicates the epidermis which is the ultimate defensive layer. The sequence of tissues from the outside to the inside is phellem-endodermis-pericycle-phloem. Phellem is the cork tissue that replaces the epidermis after secondary growth. - Endodermis is outer to the pericycle. Xylem and phloem are present and they are interior to pericycle.
AIIMS-2003
Anatomy of Flowering Plants
271821
Generally, a monocot stem bears vascular bundles
1 concentric and closed
2 concentric and open
3 conjoint and open
4 radial and open
Explanation:
Exp:A When xylem completely surrounds the phloem called concentric vascular bundle. Concentric bundle is always closed. - When cambium is absent in vascular bundle called the closed vascular bundle as monocot stem.
Exp:C The name lenticel is derived from its (lenslike) lenticular form. They facilitate the gas exchange of oxygen, carbon dioxide and water vapour in plant bodies that produce secondary growth. - Transpiration takes place mostly through stomata. - Guttation and bleeding takes place through hydathodes.
AIPMT-2002
Anatomy of Flowering Plants
271818
Pith cavity occurs in the stem of:
1 Helianthus
2 Zea mays
3 Cucurbita
4 Dracaena
Explanation:
Exp:C The central part of stem is a cavity known as pith, in which the vascular bundles are embedded in its outer zone. It is made up of polygonal oval shaped or rounded parenchyma cells which encloses intercellular space. - The hollow cavity present in the stem is called pith cavity.
AIIMS-2015
Anatomy of Flowering Plants
271819
From the outside to the inside is:
1 Phellem - pericycle - endodermis - phloem
2 Phellem - phloem - endodermis - pericycle
3 Phellem - endodermis - pericycle - phloem
4 Pericycle - phellem - endodermis - phloem.
Explanation:
Exp:C The dicotyledonous stem indicates the epidermis which is the ultimate defensive layer. The sequence of tissues from the outside to the inside is phellem-endodermis-pericycle-phloem. Phellem is the cork tissue that replaces the epidermis after secondary growth. - Endodermis is outer to the pericycle. Xylem and phloem are present and they are interior to pericycle.
AIIMS-2003
Anatomy of Flowering Plants
271821
Generally, a monocot stem bears vascular bundles
1 concentric and closed
2 concentric and open
3 conjoint and open
4 radial and open
Explanation:
Exp:A When xylem completely surrounds the phloem called concentric vascular bundle. Concentric bundle is always closed. - When cambium is absent in vascular bundle called the closed vascular bundle as monocot stem.
Exp:C The name lenticel is derived from its (lenslike) lenticular form. They facilitate the gas exchange of oxygen, carbon dioxide and water vapour in plant bodies that produce secondary growth. - Transpiration takes place mostly through stomata. - Guttation and bleeding takes place through hydathodes.
AIPMT-2002
Anatomy of Flowering Plants
271818
Pith cavity occurs in the stem of:
1 Helianthus
2 Zea mays
3 Cucurbita
4 Dracaena
Explanation:
Exp:C The central part of stem is a cavity known as pith, in which the vascular bundles are embedded in its outer zone. It is made up of polygonal oval shaped or rounded parenchyma cells which encloses intercellular space. - The hollow cavity present in the stem is called pith cavity.
AIIMS-2015
Anatomy of Flowering Plants
271819
From the outside to the inside is:
1 Phellem - pericycle - endodermis - phloem
2 Phellem - phloem - endodermis - pericycle
3 Phellem - endodermis - pericycle - phloem
4 Pericycle - phellem - endodermis - phloem.
Explanation:
Exp:C The dicotyledonous stem indicates the epidermis which is the ultimate defensive layer. The sequence of tissues from the outside to the inside is phellem-endodermis-pericycle-phloem. Phellem is the cork tissue that replaces the epidermis after secondary growth. - Endodermis is outer to the pericycle. Xylem and phloem are present and they are interior to pericycle.
AIIMS-2003
Anatomy of Flowering Plants
271821
Generally, a monocot stem bears vascular bundles
1 concentric and closed
2 concentric and open
3 conjoint and open
4 radial and open
Explanation:
Exp:A When xylem completely surrounds the phloem called concentric vascular bundle. Concentric bundle is always closed. - When cambium is absent in vascular bundle called the closed vascular bundle as monocot stem.
Exp:C The name lenticel is derived from its (lenslike) lenticular form. They facilitate the gas exchange of oxygen, carbon dioxide and water vapour in plant bodies that produce secondary growth. - Transpiration takes place mostly through stomata. - Guttation and bleeding takes place through hydathodes.
AIPMT-2002
Anatomy of Flowering Plants
271818
Pith cavity occurs in the stem of:
1 Helianthus
2 Zea mays
3 Cucurbita
4 Dracaena
Explanation:
Exp:C The central part of stem is a cavity known as pith, in which the vascular bundles are embedded in its outer zone. It is made up of polygonal oval shaped or rounded parenchyma cells which encloses intercellular space. - The hollow cavity present in the stem is called pith cavity.
AIIMS-2015
Anatomy of Flowering Plants
271819
From the outside to the inside is:
1 Phellem - pericycle - endodermis - phloem
2 Phellem - phloem - endodermis - pericycle
3 Phellem - endodermis - pericycle - phloem
4 Pericycle - phellem - endodermis - phloem.
Explanation:
Exp:C The dicotyledonous stem indicates the epidermis which is the ultimate defensive layer. The sequence of tissues from the outside to the inside is phellem-endodermis-pericycle-phloem. Phellem is the cork tissue that replaces the epidermis after secondary growth. - Endodermis is outer to the pericycle. Xylem and phloem are present and they are interior to pericycle.
AIIMS-2003
Anatomy of Flowering Plants
271821
Generally, a monocot stem bears vascular bundles
1 concentric and closed
2 concentric and open
3 conjoint and open
4 radial and open
Explanation:
Exp:A When xylem completely surrounds the phloem called concentric vascular bundle. Concentric bundle is always closed. - When cambium is absent in vascular bundle called the closed vascular bundle as monocot stem.
