In sugarcane, $CO _2$ is fixed in malic acid with the help of enzyme __________.
- APEP carboxylase
- BRibulose phosphate kinase
- CRuBP carboxylase
- DFructose phosphotase
Question types
MODEL PAPER 10 question types
38 questions across 6 question groups — pick any mix to generate a BIOLOGY paper with step-by-step answer keys.
38
Questions
6
Question groups
5
Question types
01
M.C.Q (1 Marks)
12 Q→022 Marks Questions
6 Q→033 Marks Question
8 Q→044 Marks Questions
2 Q→055 Marks Questions
6 Q→06Assertion & Reason
4 Q→Sample Questions
MODEL PAPER 10 questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
In dicot leaves, stomata are present on which surface of the leaf?
- AOn the midrib
- BVentral surface
- CBoth surface
- DDorsal surface
Mark the incorrect statement in context to $O _2$.binding to Hb:
- ALower temperature
- BHigher pH
- CLower p$CO _2$
- DHigher p$O _2$
Example of interspecific hybrid is:
- ATigon and liger
- BCat and lion
- CTigon and tiger
- DLiger and dog
Cycas is a gymnosperm as it has:
- ANaked seeds
- BLiving fossil status
- CSieve tubes
- DVessels
Difference between Somatostatin and Somatomedin.
Can girdling experiments be done in monocots? If yes, How? If no, why not?
Why does a green plant start evolving $CO _2$, instead of $O _2$. on a hot summer day? Explain.
View full solution →Define a taxon. Give some examples of taxa at different hierarchical levels.
What is the difference between cutaneous and pulmonary respiration?
Distinguish between Competitive and Allosteric inhibition.
Examine the following diagram and answer the following questions:
i. What is the diagram representing?
ii. When point A becomes permeable to Na¹, what change occurs in the polarity of the membrane.
iii. What is the potential difference at point A called ?
i. What is the diagram representing?
ii. When point A becomes permeable to Na¹, what change occurs in the polarity of the membrane.
iii. What is the potential difference at point A called ?
What is hypertension? List its causative factors.
Write a note on regulation of cardiac activity.
Given below is a diagram of the human cranial bones. Answer the following questions:
i. Identify the different parts labelled from A to E of cranial bones.
ii. Name the only movable bone in the skull of man?
iii. Due to the presence of which pigment skeletal muscles are categorised into red and white muscles?
i. Identify the different parts labelled from A to E of cranial bones.
ii. Name the only movable bone in the skull of man?
iii. Due to the presence of which pigment skeletal muscles are categorised into red and white muscles?
The morphology of the mycelium, mode of spore formation, and fruiting bodies form the basis for the division of the fungi kingdom into various classes which include four sub-division Phycomycetes, ascomycetes, basidiomycetes, Deuteromycetes. Members of Phycomycetes are found in aquatic habitats and on decaying wood in moist and damp places or as obligate parasites on plants, ascomycetes are mostly multicellular. The asexual spores are conidia produced exogenously on the special mycelium called conidiophores. Basidiomycetes are mushrooms, bracket fungi or puffballs. They grow in soil, on logs and tree stumps and in living plant bodies as parasites. The basidiospores are exogenously produced on the basidium.
i. Observed given table of Classification of Fungi and identify the class of fungi in which asexual spores are not found, vegetative reproduction occurs by fragmentation, and sexual organs are absent. (1)
ii. Where are Members of Phycomycetes found? (1)
iii. What is ascomycetes? What is the characteristic feature of ascomycetes and basidiomycetes? (2)
OR
Identify the figure given below. Also, mention its characteristics. (2)
| Classification of Fungi | |||
| Phycomycetes (Lower Fungi) | Ascomycetes (Sac Fungi) | Basidiomycetes (Club Fungi) | Deuteromycetes (Fungi imperfecti) |
| Saprolegnia | Yeast | Agaricus | Cercospora |
| Rhizopus | Aspergillus | Polyporus | Collectotrichum |
| Mucor | Pencillium | Puccinia | Trichoderma |
| Albugo | Neurospora | Ustilago | Pyricularia |
| Pythium | Peziza | Lycoperdon | Fusarium |
ii. Where are Members of Phycomycetes found? (1)
iii. What is ascomycetes? What is the characteristic feature of ascomycetes and basidiomycetes? (2)
OR
Identify the figure given below. Also, mention its characteristics. (2)
Explain, why a pair of homologous chromosomes is genetically different, but a pair of sister chromatids is genetically identical before crossing over in meiosis.
What are the characteristics of prokaryotic cells?
Describe the structure of the membrane as proposed in fluid mosaic model.
Where is the electron transport system operative in mitochondria? Explain the system highlighting the role of oxygen.
Comment on the statement - Meiosis enables the conservation of specific chromosome number of each species even though the process per se, results in reduction of chromosome number.
Assertion (A): Erythrocytes can carry out anaerobic metabolism only.
Reason (R): In erythrocytes, carbon-dioxide is converted into bicarbonates.
Reason (R): In erythrocytes, carbon-dioxide is converted into bicarbonates.
- ABoth A and R are true and R is the correct explanation of A
- BBoth A and R are true but R is not the correct explanation of A.
- CA is true but R is false.
- DA is false but R is true.
Assertion (A): Proteins are a heteropolymer.
Reason (R): Dietary proteins are the source of non-essential amino acids.
Reason (R): Dietary proteins are the source of non-essential amino acids.
- ABoth A and R are true and R is the correct explanation of A
- BBoth A and R are true but R is not the correct explanation of A.
- CA is true but R is false.
- DA is false but R is true.
Assertion (A): Exchange of $O _2$ and $CO _2$ in respiration mainly based on pressure/concentration gradient.
Reason (R): Solubility of the gases as well as the thickness of the membranes involved in diffusion is also can affect the rate of diffusion
Reason (R): Solubility of the gases as well as the thickness of the membranes involved in diffusion is also can affect the rate of diffusion
- ABoth A and R are true and R is the correct explanation of A.
- BBoth A and R are true but R is not the correct explanation of A.
- CA is true but R is false.
- DA is false but R is true.
Assertion (A): The protist feeds on red blood corpuscles.
Reason (R): Amoebiasis is caused by Amoeba
Reason (R): Amoebiasis is caused by Amoeba
- ABoth A and R are true and R is the correct explanation of A.
- BBoth A and R are true but R is not the correct explanation of A.
- CA is true but R is false.
- DA is false but R is true.
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