Tag: structure of monocot and dicot seed

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Questions Related to structure of monocot and dicot seed

Multiple choice biology seeds - structure and germination dicot seed structure of monocot and dicot seed the seed monocot seed

The reticulate venation is commonly found in the leaves of

  1. Monocot plants

  2. Dicot plants

  3. Bryophytes

  4. Thallophytes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Reticulate venation is the arrangement in which the veins of the leaf cross each other around the midrib. It may be unicostate or multicostate depending on the number of mid-ribs and lobes of the leaf. For example, dicot plant.
Thus, the correct answer is option B.

Multiple choice biology seeds - structure and germination dicot seed structure of monocot and dicot seed the seed monocot seed

Cotyledons constitute the first pair of leaves in

  1. Castor

  2. Maize

  3. Pea

  4. Gram
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A. Embryo lies in the centre of endosperm. It consists of a radicle, a plumule and two lateral cotyledons, all of which are present on a short embryo axis. The cotyledons are thin, semi-transparent and oval in outline. They have palmate venation. The middle costa or rib is more prominent and bears a few lateral veins.

B. Maize- Cotyledons store food material for the embryo.

C. Pea- Cotyledons store food material for the embryo.

D. Gram- Cotyledons store food material for the embryo.
So, the correct answer is 'Castor'.

Multiple choice biology seeds - structure and germination dicot seed structure of monocot and dicot seed the seed monocot seed

The most vast dicot family is

  1. Fabaceae

  2. Compositae

  3. Orchidaceae

  4. Loranthaceae
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The production of vast amount of grain is one of the most outstanding outcome of modern agriculture. Poaceae (monocot) and fabaceae (dicot) contribute to the species, that are responsible for the vast majority of grain production worldwide.

Multiple choice biology seeds - structure and germination dicot seed structure of monocot and dicot seed the seed monocot seed

Which among dicotyledons are considered to have most primitive genera?

  1. papilionaceae (Crotolaria sp.)

  2. Cucurbitaceae (Cucurbita sp)

  3. Magnoliaceae (Magnolia sp.)

  4. Rosaceae (Rosa sp.)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The earliest known flowering plants date back to about 130 million years ago. According to Cronquist (evolution and classification of flowering plants, 1988), the most primitive of all living angiosperms belong to the subclass Magnoliidae. This subclass contains several primitive plant families, including the water-lily family (Nymphaeaceae), buttercup family (Ranunculaceae) and magnolia family (Magnoliaceae). 

Multiple choice biology seeds - structure and germination dicot seed structure of monocot and dicot seed the seed monocot seed

The botanical name of ground nut is

  1. Cicer arietinum

  2. Glycine max

  3. Arachis hypogaea

  4. Lens esculentus
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Arachis hypogaea is the botanical name of peanut or groundnut. It is an annual herbaceous plant in the Fabaceae (legume or bean family). Although appearing as and referred to as a nut, it is actually the underground pod of a legume, rather than a true nut.

Multiple choice biology seeds - structure and germination dicot seed structure of monocot and dicot seed the seed monocot seed

Cork of dicot stem comprises of

  1. Phelloderm

  2. Phellem

  3. Phellogen

  4. Phloem
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Cork cambium is a tissue found in many vascular plants as part of the periderm. The cork cambium is a lateral meristem and is responsible for secondary growth that replaces the epidermis in roots and stems. 
Synonyms for cork cambium are phellogen. 
Phellogen is defined as the meristematic cell layer responsible for the development of the periderm.
The periderm thus consists of three different layers:
1. phelloderm – inside of cork cambium; composed of living parenchyma cells
2. phellogen (cork cambium) – meristem that gives rise to periderm
3. phellem (cork) – dead at maturity; air-filled protective tissue on the outside.
Multiple choice biology seeds - structure and germination dicot seed structure of monocot and dicot seed the seed monocot seed

Pea nut or Ground nut oil is obtained from 

  1. Lathyrus odoratus

  2. Pisum sativum

  3. Arachis hypogea

  4. Glycine max, Brassica juncea
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The peanut or groundnut (Arachis hypogaea) is a species in the family Fabaceae. The peanut was probably first domesticated and cultivated in the valleys of Paraguay. It is an annual herbaceous plant growing 30 to 50 cm tall. Peanut oil is often used in cooking, because it has a mild flavor and a relatively high smoke point. Due to its high monounsaturated content, it is considered healthier than saturated oils and is resistant to rancidity. There are several types of peanut oil including aromatic roasted peanut oil, refined peanut oil, extra virgin or cold pressed peanut oil and peanut extract. In the United States, refined peanut oil is exempt from allergen labeling laws.
Peanut oil is not obtained from Lathyrus odoratus (sweet pea), Pisum sativum (garden pea), Glycine max (soya) or Brassica juncea (mustard). 
Therefore, the correct answer is option C.

Multiple choice biology seeds - structure and germination dicot seed structure of monocot and dicot seed the seed monocot seed

In plants, during embryonic condition

  1. All cells of the embryo divide.

  2. Meristematic activity is confined to single apical cell.

  3. Meristematic activity is confined to a group of apical cells.

  4. Apical and lateral cells only divide.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Embryonic tissue in plants refers to the actively growing cells but more than often this term is used to describe the early formation of tissue during its first growth stages. It thus refers to the sporophyte, gametophyte embryos from seedlings as well as meristematic tissues which are always in embryonic state. Under this condition, the growth of this tissues takes place through cell division and the cells of the embryo divide.

Therefore, the correct answer is option A.