A root cap is not found in the root of
1. Stilt root of Pandanus
2. Seminal roots
3.Hanging prop root of Banyan
4.Epiphytic roots
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The characteristic larva in coelenterates is
1.Oncosphere
2.Rhabditiform
3.Planula
4.Cysticercus
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________ are the neurons carrying impulses away from the central nervous system
1.Efferent nerves
2.Afferent nerves
3.Extensors
4. Sensory nerves
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A nerve impulse jumps from one __________ to another during saltatory conduction
1.Synapse
2. Axon
3.Node of Ranvier
4. Myelin sheath
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A coelenterate that is commonly referred to as ‘fresh water polyp’ is
1. Obelia
2. Physalia
3. Hydra
4.Aurelia
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Epiphyllous roots in Begonia and Bryophyllum are
1.Modified leaves
2. Green roots
3. Roots arising from leaves
4.Roots bearing stem
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For the first time, research on nerve cells was carried out on this organism
1. Grasshopper
2.Drosophila melanogaster
3.Octopus
4. Giant squid
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In the event of starvation, after consumption of glycogen and fats, the next nutrient that is to be consumed is
1. starch
2.cellulose
3.proteins
4.adenosine triphosphate
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Individuals with bulimia have a perceived lack of control over their eating pattern and are often reported to _________.
1. Low self-esteem
2.High levels of self-disgust
3. High levels of depression
4.All of the above
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Neurotransmitters can inhibit or excite neurons. _________ for example, is inhibitory whereas __________ is excitatory
1.GABA; glutamate
2.Glutamate; GABA
3. Serotonin; dopamine
4.None of these
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Nissl’s granules are found in
1.Nerve cells
2. WBC
3.RBC
4.Platelets
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A plant with epidermis specialised to absorb moisture from the air is______.
1. Rhizophora
2.Jussiaea
3.Vanda
4.Avicennia
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The chamber common to all the types of the canal system of sponges is
1.Excurrent canal
2.Radial chamber
3. Incurrent canal
4.Paragastric cavity
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What is the outer covering of the epiphytic root called?
1.Velamen
2.Rhizophore
3.Semaphore
4.Pneumatophore
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Which of these has the highest permeability in a resting nerve cell?
1.Cl-
2.Na+
3.K+
4. I-
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Aerial absorptive roots occur in
1.Mesophytes
2.Epiphytes
3.Xerophytes
4.Hydrophytes
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he Body Mass Index(BMI) measure depicts that one can be considered as overweight with a BMI of:
1. 45-59.9
2.25-29.9
3. 20.9-30.9
4. 20.9-30.9
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How many children in the middle and low-income areas can be affected by Vitamin A deficiency?
1. 1/2
2. 1/3
3. 1/4
4. 1/8
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This is a flagellated larva of Leucosolenia
1. Maggot
2.Kedia
3. Planula
4. Parenchymula
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Identify the correct statement
1.Velamen roots attach to the soil
2. In Cuscuta, velamen roots are present
3. Velamen roots are tap roots
4.Velamen roots are living
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In a cell as per the Operon Concept, the regulator gene governs the chemical reactions by
1.Inhibiting the substrate in the reaction
2. Inhibiting migration of mRNA into cytoplasm
3.mRNA transcription inhibited
4.Enzyme-reaction inactivation
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In the presence of lactose, how long does it take for the lac operon to be expressed?
1.when lactose equals glucose concentration
2. when glucose is more than lactose concentration
3. as long as lactose is more than glucose concentration
4.as long as lactose is more than galactose concentration
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Lac operon is an example of
1. only positive regulation
2.only negative regulation
3.both positive and negative regulation
4.sometimes positive sometimes negative
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Lac Operon will be turned on when
1.Lactose is less than glucose
2.Lactose is less in the medium
3. Lactose is more than glucose
4.Glucose is enough in the medium
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Oxygen in coelenterates is supplied to different tissues by
1.Plasma
2. Diffuses through integuments
3. Blood pigment
4.Tracheal tubes
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Pick the most suitable terminology to designate life cycle of Obelia
1. Metamorphosis
2. Neoteny
3.Metagenesis
4. None of the above
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Poriferan evolution from protozoans is evidenced by animals such as
1. Paramecium
2.Euglena
3. Chlamydomonas
4. Proterospongia
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Regulation of the lac operon can be envisioned as regulation of enzyme synthesis by its
1. lactose
2.substrate
3. carbohydrates
4.all of the above
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The class of coelenterata in which the medusa and polyp both are found in one animal is
1. Anthozoa
2.Hydrozoa
3.Scyphozoa
4.None of the above
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The condition wherein there is no enough food in a region to feed people is known as ______.
1. Drought
2.Famine
3. Monsoon
4.Thunderstorm
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The lesions to which part of the brain in animal research have been shown to cause appetite loss leading to self-starvation syndrome
1.Amygdala
2.Cerebellum
3. Basal ganglia
4.lateral hypothalamus
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The Myelin sheath is derived from the
1. Microglia
2.Neuroglial cells
3.Schwann cells
4. Nerve cells
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The presence of epiphytic roots is the characteristic feature of_________
1. Cuscuta, in which haustoria is present
2.Pinus, in which mycorrhizal association is present
3. Orchids, in which velamen tissue is present
4.Jussiaea, in which floating roots are present
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The sequence of the structural genes in the lac operon is
1. lacA-lacZ-lacY
2. lacZ-lacY-lacA
3.lacZ-lacA-lacY
4.lacA-lacY-lacZ
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This amongst the following is found in muscle cells and nerves
1. membrane potential
2. potassium equilibrium potential
3. resting potential
4. sodium equilibrium potential
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This does not belong to Phylum Coelenterata
1. Sea cucumber
2. Sea feather
3.Sea pen
4.Sea fan
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This group is commonly known as ‘sea stick’
1.Porifera
2. Coelenterata
3. Arthropoda
4.Echinodermata
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This is a characteristic feature of coelenterata
1.Polyp
2. Gastrovascular cavity
3. All are marine
4.Presence of tentacles around mouth
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This is a function of velamen
1.transpiration
2.exchange of gases
3.absorption of moisture from air
4.absorption of water from soil
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This is a special character of coelenterata occurring only in them
1.Flame cells
2. Hermaphroditism
3.Nematocysts
4.Polymorphism
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This neurotransmitter is not a biogenic amine
1. Serotonin
2.Dopamine
3.Norepinephrine
4.Neuropeptides
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This phylum shows the presence of nerve cells and absence of nerves
1. Coelenterata
2. Porifera
3.Nemathelminthes
4.Platyhelminthes
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This root modification does not store food
1.Napiform
2.Tuberous
3.Stilt
4.Conical
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Velamen is a special layer of absorptive tissue, consisting of 4 or 5 layers of long polygonal cells, which are formed by the _________.
1. Stem
2.Absorbing roots
3.Hanging roots
4.Clinging roots
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WFP stands for _______.
1.World Food Program
2.Wild Fire Protection
3.Wild Fauna Protection
4.Wild Food Program
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What happens when a person goes hungry for a long period of time?
1.They may be more prone to disease
2.They may be stunted in height
3. Affects brain functioning
4.All of these
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Which of the following are the result of the droughts, flooding, increased population and unequal distribution of food?
1.Malaria
2. Typhoid
3.Famine
4. Dengue fever
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Which of the following is linked with the self-starvation in preventing type anorexia nervosa/binge-eating?
1.Eating only certain food types
2.Not being bothered about weight gain
3.Not eating to help control weight gain
4.Regularly engaging in purging activities to help control weight gain
Posted Date:-2021-02-22 06:36:16
Which of these acts as an inducer of the lac operon?
1. Allolactose
2. Lactose
3. Galactose
4.Glucose
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Which of these is a disease of the myelin sheath?
1.Polio
2. Leprosy
3.Multiple sclerosis
4.Alzheimer
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